Annual report pursuant to Section 13 and 15(d)

Related Party Transactions - Additional Information (Detail)

v3.8.0.1
Related Party Transactions - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Oct. 03, 2014
Nov. 30, 2017
Nov. 30, 2017
Oct. 31, 2017
Jul. 31, 2017
Jun. 30, 2017
Jun. 26, 2017
Mar. 17, 2017
Sep. 30, 2016
Jul. 31, 2016
May 31, 2016
Apr. 27, 2016
Oct. 31, 2015
Sep. 18, 2015
May 31, 2015
Sep. 30, 2014
Sep. 30, 2017
Sep. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2012
Sep. 09, 2016
Mar. 17, 2014
Related Party Transaction [Line Items]                                                
Interest own in percent by family members of principal stockholder or director                                     0.00%          
Costs and Expenses, Related Party                                     $ 0 $ 84,000 $ 24,000      
Payments for Fees   $ 2,700,000 $ 100,000                             $ 1,265,000            
Operating Leases, Rent Expense $ 2,700,000         $ 55,000       $ 53,000     $ 200,000                 $ 100,000    
Lease Sharing Agreements Contributions To Property Under Lease                                     163,000 4,800,000        
Business Combination, Consideration Transferred                                     $ 22,872,000          
Equity Method Investment, Ownership Percentage                                               35.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights                                     7.00          
Class of Warrant or Right, Exercise Price of Warrants or Rights             $ 4.02             $ 7.00         $ 2,500          
Proceeds from Convertible Debt                                     $ 9,914,000 4,609,000 0      
Payments of Financing Costs                                     $ 0 0 855,000      
Stock Issued During Period, Shares, New Issues       43,292                   10,000                    
Stock Issued During Period, Value, New Issues                                       53,000,000        
Maximum [Member]                                                
Related Party Transaction [Line Items]                                                
Class of Warrant or Right, Exercise Price of Warrants or Rights                                     $ 4.75          
Minimum [Member]                                                
Related Party Transaction [Line Items]                                                
Class of Warrant or Right, Exercise Price of Warrants or Rights                                     $ 3.61          
National Holdings Corporation [Member]                                                
Related Party Transaction [Line Items]                                                
Business Acquisition, Percentage of Voting Interests Acquired               56.60% 56.60%     56.00%                     56.60%  
Business Combination, Consideration Transferred                 $ 22,900,000     $ 22,900,000                        
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          
Opus Credit Facility [Member]                                                
Related Party Transaction [Line Items]                                                
Payments of Loan Costs                                     $ 1,100,000 $ 200,000 $ 0      
Caelum Convertible Notes [Member]                                                
Related Party Transaction [Line Items]                                                
Payments for 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          
Chief Executive Officer [Member]                                                
Related Party Transaction [Line Items]                                                
Interest own in percent by principal stockholder or director                                     13.00% 12.30% 12.20%      
Chord Advisors, LLC [Member]                                                
Related Party Transaction [Line Items]                                                
Related Party Transaction, Expenses from Transactions with Related Party                             $ 10,000                  
Board of Directors Chairman [Member] | National Holdings Corporation [Member]                                                
Related Party Transaction [Line Items]                                                
Equity Method Investment, Ownership Percentage                 4.60%                              
TG Therapeutics, Inc [Member]                                                
Related Party Transaction [Line Items]                                                
Payments for Rent                                     $ 1,000,000 $ 400,000        
Percentage of Rentable Area                     45.00%         40.00%                
Operating Leases, Rent Expense                               $ 1,100,000                
Due from Related Parties, Current                                     135,000 95,000        
Checkpoint [Member] | Chord Advisors, LLC [Member]                                                
Related Party Transaction [Line Items]                                                
Related Party Transaction, Expenses from Transactions with Related Party                                     $ 65,000 75,000 $ 10,000      
Founders Agreement [Member]                                                
Related Party Transaction [Line Items]                                                
Agreement Description Term                                     The Company has entered into Founders Agreements with certain Fortress Companies. 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 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]                                                
Payments for Rent                                     $ 24,000 2,100,000        
Percentage of Rentable Area                     10.00%         20.00%                
Operating Leases, Rent Expense                               $ 500,000                
Lease Improvement Cost Associate With Lease                                     5,100,000          
Due from Related Parties, Current                                     $ 6,600 500,000        
Executives Vice Chairman [Member]                                                
Related Party Transaction [Line Items]                                                
Interest own in percent by principal stockholder or director                                     15.20%   14.80%      
Mustang [Member] | Chord Advisors, LLC [Member]                                                
Related Party Transaction [Line Items]                                                
Related Party Transaction, Expenses from Transactions with Related Party                     $ 7,500                          
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                             $ 5,000       $ 64,700 15,000 $ 0      
Avenue [Member] | Founders Agreement [Member]                                                
Related Party Transaction [Line Items]                                                
Other Fee Percentage           2.50% 2.50%                                  
Stock Issued During Period, Shares, New Issues             158,000                                  
Stock Issued During Period, Value, New Issues             $ 900,000                                  
Desk Share Agreements [Member]                                                
Related Party Transaction [Line Items]                                                
Payments for Rent                                     2,400,000 1,000,000        
Shared Services Agreement [Member] | TG Therapeutics, Inc [Member]                                                
Related Party Transaction [Line Items]                                                
Proceeds from Related Party Agreement                                     1,000,000 800,000        
Due from Related Parties, Current                                     $ 900,000 $ 71,800