Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Additional Information (Detail)

v3.5.0.2
Fair Value Measurements - Additional Information (Detail) - USD ($)
 1 Months Ended 3 Months Ended 9 Months Ended
Oct. 31, 2015
Mar. 17, 2014
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Equity Method Investments   $ 250,000 $ 250,000   $ 250,000    
Equity Method Investment, Ownership Percentage   35.00%          
Investments in and Advances to Affiliates, at Fair Value, Period Increase (Decrease), Total         1,800,000    
Investment Owned, at Fair Value     2,178,000   $ 2,178,000   $ 0
Percentage of Outstanding Stock To Be Issued Upon Exercise of Warrants         25.00%    
Fair Value Adjustment of Warrants     $ 16,000 $ 0 $ 105,000 $ 0  
Private Placement [Member]              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Business Acquisition, Share Price     $ 1.61   $ 1.61    
Origo Acquisition Corporation [Member]              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Investment Owned, at Fair Value     $ 400,000   $ 400,000    
Investments in Subsidiary, Number of Shares Transferred to Subsidiary         1,050,000    
Fair Value Assumptions, Probability of Business Combination         31.89%    
Investments In Subsidiary Number Of Shares Outstanding     265,000   265,000    
Realized Investment Gains (Losses)         $ 25,000    
Working Capital Note Convertible to Equity     $ 300,000   300,000    
Unrealized Gain (Loss) on Investments         1,775,000    
Common Stock Subject to Mandatory Redemption [Member]              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Net Assets     $ 31,700,000   $ 31,700,000    
Non Redeemable warrants [Member]              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Business Acquisition, Share Price     $ 0.16   $ 0.16    
Redeemable warrants [Member]              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Business Acquisition, Share Price     0.04   $ 0.04    
NSC Note [Member]              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Warrant Expiration Period         10 years    
Fair Value Adjustment of Warrants $ 3,000,000            
Binomial Lattice Model [Member]              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Fair Value Assumptions, Exercise Price     11.50   $ 11.50    
Fair Value Assumptions, Risk Free Interest Rate         1.14%    
Fair Value Assumptions, Expected Volatility Rate         25.60%    
Binomial Lattice Model [Member] | Warrant [Member]              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Business Acquisition, Share Price     0.50   $ 0.50    
Ghaidarov Model [Member] | Warrant [Member]              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Business Acquisition, Share Price     0.13   0.13    
Private Units [Member]              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Share Price     $ 5.04   $ 5.04    
Argus Neurooptics Llc [Member] | Class A Preferred Stock [Member]              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Shares Received Under Purchase Agreement   $ 13,409,962          
Percentage Of Shares Received Under Purchase Agreement   83.00%          
Preferred Units, Issued   16,091,954