Annual report pursuant to Section 13 and 15(d)

Related Party Transactions - Additional Information (Detail)

v3.19.1
Related Party Transactions - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Oct. 03, 2014
Nov. 30, 2017
Nov. 30, 2017
Jul. 31, 2017
Jun. 30, 2017
Jun. 26, 2017
May 31, 2016
Oct. 31, 2015
May 31, 2015
Sep. 30, 2014
Jun. 30, 2018
Sep. 30, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2012
Jul. 02, 2018
Dec. 31, 2015
Related Party Transaction [Line Items]                                  
Costs and Expenses, Related Party                         $ 0 $ 0      
Payments for Other Fees   $ 2,700,000 $ 100,000                            
Operating Leases, Rent Expense $ 2,500,000       $ 55,000     $ 200,000             $ 100,000    
Lease Sharing Agreements Contributions To Property Under Lease                         121,000 163,000      
Due from Related Parties, Current                         12,000 $ 6,600      
Debt Instrument, Face Amount                                 $ 900,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights           125,000                      
Class of Warrant or Right, Exercise Price of Warrants or Rights                           $ 8.50      
Proceeds from Convertible Debt                         0 $ 9,914,000      
Payments of Financing Costs                         0 $ 81,000      
Class of Warrant or Right Exercise Price Description                           the exercise price will be $75 million dollars divided by the total number of fully-diluted shares of Common Stock outstanding immediately prior to exercise of the warrant, giving effect to the assumed conversion of all options, warrants, and convertible securities of the Company .      
Proceeds from Other Debt                         21,707,000 $ 0      
Noninterest Expense Transfer Agent and Custodian Fees                         $ 1,700,000        
Description Of Fee Paid                         NSC received a fee of approximately $1.8 million, or 8% on the gross proceeds raised of $23.0 million.        
Debt Instrument, Interest Rate, Stated Percentage                         17.00%        
National Holdings Corporation [Member]                                  
Related Party Transaction [Line Items]                                  
Business Acquisition, Percentage of Voting Interests Acquired                         32.10%        
NSC Note [Member]                                  
Related Party Transaction [Line Items]                                  
Payments for Rent                           $ 2,800,000      
Percentage Of Placement Agent Fee                           10.00%      
Warrant on Sale Price of Note Percentage                           10.00%      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights                           716,180      
NSC Note [Member] | Maximum [Member]                                  
Related Party Transaction [Line Items]                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights                           $ 4.75      
NSC Note [Member] | Minimum [Member]                                  
Related Party Transaction [Line Items]                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights                           $ 3.61      
Opus Credit Facility [Member]                                  
Related Party Transaction [Line Items]                                  
Payments of Loan Costs                         $ 300,000 $ 1,100,000      
Debt Instrument, Interest Rate, Stated Percentage [1]                         12.00%        
Caelum Convertible Notes [Member]                                  
Related Party Transaction [Line Items]                                  
Payments for Other Fees                           $ 1,000,000      
Debt Instrument, Face Amount       $ 10,000,000                          
Proceeds from Convertible Debt       $ 9,900,000                          
Debt Instrument Issuance Percentage of Commission       10.00%                          
Payments of Financing Costs       $ 1,000,000                          
Class of Warrant or Right Percentage Securities Called by Warrants or Rights       10.00%                          
Class Of Warrant Or Right Exercise Price Percentage Of Warrants Or Rights       110.00%                          
Class of Warrant or Right Exercise Price Description       the exercise price will be $75 million dollars divided by the total number of fully-diluted shares of Common Stock outstanding immediately prior to exercise of the warrant, giving effect to the assumed conversion of all options, warrants, and convertible securities of the Company                 the exercise price will be $75 million dollars divided by the total number of fully-diluted shares of Common Stock outstanding immediately prior to exercise of the warrant, giving effect to the assumed conversion of all options, warrants, and convertible securities of the Company        
Chief Executive Officer [Member]                                  
Related Party Transaction [Line Items]                                  
Interest own in percent by principal stockholder or director                           13.00%      
Chord Advisors, LLC [Member]                                  
Related Party Transaction [Line Items]                                  
Related Party Transaction, Expenses from Transactions with Related Party                 $ 10,000                
Chief Executive Officer And Executive Vice President [Member]                                  
Related Party Transaction [Line Items]                                  
Bonuses Paid To Related Party                     $ 500,000            
TG Therapeutics, Inc [Member]                                  
Related Party Transaction [Line Items]                                  
Payments for Rent                         $ 54,000 $ 24,000      
Percentage of Rentable Area             45.00%     40.00%              
Operating Leases, Rent Expense                   $ 1,100,000              
Due from Related Parties, Current                           1,000,000   $ 47,000  
TG Therapeutics, Inc [Member] | Opus Credit Facility [Member]                                  
Related Party Transaction [Line Items]                                  
Due from Related Parties, Current                         1,000,000        
Checkpoint [Member] | Chord Advisors, LLC [Member]                                  
Related Party Transaction [Line Items]                                  
Related Party Transaction, Expenses from Transactions with Related Party                         $ 50,000 65,000      
Founders Agreement [Member]                                  
Related Party Transaction [Line Items]                                  
Agreement Description Term                         he Company has entered into Founders Agreements with each of the Fortress Companies listed in the table below. Pursuant to each Founders Agreement, in exchange for the time and capital expended in the formation of each Fortress Company and the identification of specific assets the acquisition of which result in the formation of a viable emerging growth life science company, the Company will loan each such Fortress Company an amount representing the up-front fee required to acquire assets. Each Founders Agreement has a term of 15 years, which upon expiration automatically renews for successive one-year periods unless terminated by the Company or a Change in Control (as defined in the Founders Agreement) occurs. In connection with each Founders Agreement the Company receives 250,000 Class A Preferred shares (except for that with Checkpoint, in which the Company holds Class A Common Stock). The Class A Preferred Stock (Class A Common Stock with respect to Checkpoint) is identical to common stock other than as to voting rights, conversion rights and the PIK Dividend right (as described below). Each share of Class A Preferred Stock (Class A Common Stock with respect to Checkpoint) is entitled to vote the number of votes that is equal to one and one-tenth (1.1) times a fraction, the numerator of which is the sum of (A) the shares of outstanding common stock and (B) the whole shares of common stock into which the shares of outstanding Class A Preferred Stock (Class A Common Stock with respect to Checkpoint) are convertible and the denominator of which is the number of shares of outstanding Class A Preferred Stock (Class A Common Stock with respect to Checkpoint). Thus, the Class A Preferred Stock (Class A Common Stock with respect to Checkpoint) will at all times constitute a voting majority. Each share of Class A Preferred Stock (Class A Common Stock with respect to Checkpoint) is convertible, at the holder's option, into one fully paid and nonassessable share of common stock of such Fortress Company, subject to certain adjustments. The holders of Class A Preferred Stock (and the Class A Common Stock with respect to Checkpoint), as a class, are entitled receive on each effective date or "Trigger Date" defined as the date that the Company first acquired, whether by license or otherwise, ownership rights to a product) of each agreement (each a "PIK Dividend Payment Date") until the date all outstanding Class A Preferred Stock (Class A Common Stock with respect to Checkpoint) is converted into common stock or redeemed (and the purchase price is paid in full), pro rata per share dividends paid in additional fully paid and nonassessable shares of common stock ("PIK Dividends") such that the aggregate number of shares of common stock issued pursuant to such PIK Dividend is equal to two and one-half percent (2.5%) of such Fortress Company's fully-diluted outstanding capitalization on the date that is one (1) business day prior to any PIK Dividend Payment Date. The Company has reached agreements with several of the Fortress Companies to change the PIK Dividend Interest Payment Date to January 1 of each year - a change that has not and will not result in the issuance of any additional Fortress Company common stock beyond that amount to which the Company would otherwise be entitled absent such change(s). The Company owns 100% of the Class A Preferred Stock (Class A Common Stock with respect to Checkpoint) of each Fortress Company that has a Founders Agreement with the Company. As additional consideration under the Founders Agreement, each Fortress Company with which the Company has entered into a Founders Agreement will also: (i) pay an equity fee in shares of the common stock of such Fortress Company, payable within five (5) business days of the closing of any equity or debt financing for each Fortress Company or any of its respective subsidiaries that occurs after the effective date of the Founders Agreement and ending on the date when the Company no longer has majority voting control in such Fortress Company's voting equity, equal to two and one-half (2.5%) of the gross amount of any such equity or debt financing; and (ii) pay a cash fee equal to four and one-half percent (4.5%) of such Fortress Company's annual net sales, payable on an annual basis, within ninety (90) days of the end of each calendar year. In the event of a Change in Control, each such Fortress Company will pay a one-time change in control fee equal to five (5x) times the product of (A) net sales for the twelve (12) months immediately preceding the change in control and (B) four and one-half percent (4.5%).        
Founders Agreement [Member] | Caelum Convertible Notes [Member]                                  
Related Party Transaction [Line Items]                                  
Other Fee Percentage                       2.50%          
Stock Issued During Period, Shares, Conversion of Convertible Securities                       218,000          
Stock Issued During Period, Value, Conversion of Convertible Securities                       $ 200,000          
OPPM [Member]                                  
Related Party Transaction [Line Items]                                  
Percentage of Rentable Area             10.00%     20.00%              
Operating Leases, Rent Expense                   $ 500,000              
Due from Related Parties, Current                         $ 217,000 $ 135,000      
Executives Vice Chairman [Member]                                  
Related Party Transaction [Line Items]                                  
Interest own in percent by principal stockholder or director                         15.20% 15.20%      
Executives Vice Chairman [Member] | Chief Executive Officer [Member]                                  
Related Party Transaction [Line Items]                                  
Interest own in percent by principal stockholder or director                         13.10%        
Mustang [Member] | Chord Advisors, LLC [Member]                                  
Related Party Transaction [Line Items]                                  
Related Party Transaction, Expenses from Transactions with Related Party                         $ 82,000 $ 90,000      
Avenue [Member]                                  
Related Party Transaction [Line Items]                                  
Payments For Underwriter Fees           $ 2,300,000                      
Avenue [Member] | Chord Advisors, LLC [Member]                                  
Related Party Transaction [Line Items]                                  
Related Party Transaction, Expenses from Transactions with Related Party                         9,000 64,700      
Avenue [Member] | Founders Agreement [Member]                                  
Related Party Transaction [Line Items]                                  
Other Fee Percentage           2.50%                      
Stock Issued During Period, Shares, Conversion of Convertible Securities           158,000                      
Stock Issued During Period, Value, Conversion of Convertible Securities           $ 900,000                      
Desk Share Agreements [Member]                                  
Related Party Transaction [Line Items]                                  
Payments for Rent                         2,700,000 2,400,000      
Desk Share Agreements [Member] | TG Therapeutics, Inc [Member]                                  
Related Party Transaction [Line Items]                                  
Due from Related Parties, Current                         105,000        
Desk Share Agreements [Member] | OPPM [Member]                                  
Related Party Transaction [Line Items]                                  
Due from Related Parties, Current                         229,000        
Shared Services Agreement [Member] | TG Therapeutics, Inc [Member]                                  
Related Party Transaction [Line Items]                                  
Proceeds from Related Party Agreement                         1,300,000 1,000,000      
Due from Related Parties, Current                         1,300,000 $ 900,000      
Waltham [Member]                                  
Related Party Transaction [Line Items]                                  
Payments for Rent                         $ 223,000        
[1] Classified as short-term on the Company’s Consolidated Balance Sheet as of December 31, 2018 and 2017.