EARNINGS PER SHARE - Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Basic EPS computation:
Numerator-net income (in dollars)	$ 6,430	$ 2,543	$ 12,185	$ 3,023
Denominator-weighted average common shares outstanding	22,179,829	22,261,709	22,261,856	22,259,201
Basic EPS (in dollars per share)	$ 0.29	$ 0.11	$ 0.55	$ 0.14
Diluted EPS computation:
Numerator-net income (in dollars)	$ 6,430	$ 2,543	$ 12,185	$ 3,023
Denominator-weighted average common shares outstanding	22,179,829	22,261,709	22,261,856	22,259,201
Effect of dilutive stock options	11,658	14,603	12,812	17,107
Weighted average common shares and common stock equivalents	22,191,487	22,276,312	22,274,668	22,276,308
Diluted EPS (in dollars per share)	$ 0.29	$ 0.11	$ 0.55	$ 0.14