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Summary of Significant Accounting Policies - Reconciliation of Numerators and Denominators used in Computing Basic and Diluted Net Income Per Share (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2016
Accounting Policies [Abstract]      
Net income (loss) $ (2,199,263) $ 84,644  
Numerator, basic and diluted net income (loss) available to stockholders $ (2,199,263) $ 84,644  
Shares used in computation - basic:      
Weighted average common shares outstanding 7,718,366 7,541,111 7,541,111
Common shares outstanding for basic 7,718,366 7,541,111 7,541,111
Additional shares used in computation - diluted:   91,330  
Common shares outstanding for basic 7,718,366 7,541,111 7,541,111
Shares used in computing diluted net income per share 7,718,366 7,632,441  
Net (loss) per share - basic $ (0.28) $ 0.01  
Net (loss) per share - diluted $ (0.28) $ 0.01