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Stockholders' Equity - Additional Information (Detail) - USD ($)
 1 Months Ended 3 Months Ended
Apr. 06, 2017
Oct. 14, 2015
Mar. 30, 2016
Jun. 30, 2017
Mar. 31, 2017
Dec. 15, 2015
Stockholders Equity Note [Line Items]            
Common Stock, shares authorized       100,000,000 100,000,000  
Common Stock, Shares, Issued       6,033,518 6,033,518  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized       $ 791,000    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition       1 year 8 months 16 days    
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price       $ 9.71    
Common Stock Shares Outstanding       6,033,518 6,033,518  
Series A Preferred Stock [Member]            
Stockholders Equity Note [Line Items]            
Restricted shares granted to agent   1,111,111        
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 9.00        
Preferred Stock, Liquidation Preference Per Share   $ 9.00        
Preferred Stock, Conversion Basis       The Series A Preferred Stock is mandatorily convertible not sooner than the earlier to occur of (i) the later of (x) January 31, 2017 or (y) 60 days after the date on which the Company files its quarterly report on Form 10-Q for the period ending September 30, 2016, or (ii) the date on which the Company receives the written, irrevocable decision of NMM not to require a redemption of the Series A Preferred Stock, if the Company receive aggregate gross proceeds of not less than $5,000,000 in one or more transactions for the sale of the Company’s equity or convertible securities (other than transactions with NMM). The Company has not received at least $5,000,000 in one or more transactions for the sale of its equity or convertible securities to parties other than NMM.    
Preferred Stock Shares Authorized       5,000,000 5,000,000  
Preferred Stock, Shares Issued       1,111,111 1,111,111  
Preferred Stock, Shares Outstanding       1,111,111 1,111,111  
Series B Preferred Stock [Member]            
Stockholders Equity Note [Line Items]            
Restricted shares granted to agent     555,555      
Class of Warrant or Right, Exercise Price of Warrants or Rights     $ 10.00      
Stock Issued During Period, Value, New Issues     $ 4,999,995      
Preferred Stock, Liquidation Preference Per Share     $ 9.00      
Preferred Stock, Conversion Basis       (i) at the option of NMM or (ii) mandatorily at any time prior to and including March 30, 2021, if the Company receives aggregate gross proceeds of not less than $5,000,000 in one or more transactions for the sale of the Company’s equity or convertible securities (other than transactions with NMM), at an initial conversion rate of one-for-one, subject to adjustment in the event of stock dividends, stock splits and certain other similar transactions. The Company has not received at least $5,000,000 in one or more transactions for the sale of its equity or convertible securities to parties other than NMM.    
Preferred Stock Shares Authorized       5,000,000 5,000,000  
Preferred Stock, Shares Issued       555,555 555,555  
Preferred Stock, Shares Outstanding       555,555 555,555  
Directors            
Stockholders Equity Note [Line Items]            
Share price $ 9.25          
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross 80,000          
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price $ 10.18          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 572,000          
Directors | Maximum            
Stockholders Equity Note [Line Items]            
Expected volatility rate 134.83%          
Risk free interest rate 2.09%          
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 6 years          
Directors | Minimum            
Stockholders Equity Note [Line Items]            
Expected volatility rate 109.95%          
Risk free interest rate 1.53%          
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 3 years          
2015 Equity Incentive Plan            
Stockholders Equity Note [Line Items]            
Equity incentive plan, shares authorized for issuance       942,000   1,500,000