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Summary of Stock-Based Compensation Expense Related to Common Stock and Common Stock Option Awards (Detail) - USD ($)
3 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Summary Of Stock Based Compensation Expense Related To Common Stock and Common Stock Option Awards [Line Items]    
Stock-based compensation expense $ 223,566 $ 247,717
Cost of services    
Summary Of Stock Based Compensation Expense Related To Common Stock and Common Stock Option Awards [Line Items]    
Stock-based compensation expense 0 1,227
General and administrative    
Summary Of Stock Based Compensation Expense Related To Common Stock and Common Stock Option Awards [Line Items]    
Stock-based compensation expense $ 223,566 $ 246,490