CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - USD ($)	12 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Proceeds from exercise of stock options (in shares)	92,428	389,888	33,702
Proceeds from exercise of stock options, tax benefits		$ 0	$ (565,162)
Issuance of restricted common stock under stock option plan (in shares)	$ 1,394,835	$ 1,517,357	$ 284,221

Number of share options (or share units) exercised during the current period.

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