Quarterly report pursuant to Section 13 or 15(d)

Investments at Fair Value - Additional Information (Detail)

v3.2.0.727
Investments at Fair Value - Additional Information (Detail) - USD ($)
 6 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Equity Method Investments $ 250,000 $ 250,000
Trading Securities $ 20,000,000 20,002,000
Fair Value Assumptions, Weighted Average Volatility Rate 25.40%  
Share Price $ 9.52  
Investments in and Advances to Affiliates, at Fair Value, Period Increase (Decrease) $ 1,400,000  
Investment Owned, at Fair Value 5,300,000  
Working Capital 500,000  
Working Capital Committed $ 100,000  
Redeemable warrants [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Business Acquisition, Share Price $ 0.86  
Non Redeemable warrants [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Business Acquisition, Share Price $ 0.87  
Binomial Lattice Model [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Assumptions, Risk Free Interest Rate 1.63%  
Fair Value Assumptions, Expected Volatility Rate 25.40%  
Fair Value Assumptions, Exercise Price $ 11.50  
US Treasury Securities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Trading Securities $ 20,000,000 $ 20,000,000
Common Stock Subject to Mandatory Redemption [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Net Assets $ 42,900,000  
Private Units [Member] | Ghaidarov Model [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Share Price $ 9.52