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Computation of Diluted Earnings Per Share (Detail) - shares
3 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Incremental shares assumed issued on exercise of in the money 4,537,674 2,399,666
Warrants    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Incremental shares assumed issued on exercise of in the money 1,264,611 199,500
Preferred stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Incremental shares assumed issued on exercise of in the money 1,666,666 1,666,666
Convertible notes [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Incremental shares assumed issued on exercise of in the money 506,547 0
Options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Incremental shares assumed issued on exercise of in the money 1,099,850 533,500