EARNINGS PER SHARE - Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Basic EPS computation:
Numerator-net income (in dollars)	$ 2,983	$ 5,240	$ 5,194	$ 4,652	$ 4,125	$ 5,510	$ 6,430	$ 5,755	$ 18,069	$ 21,820	$ 10,472
Denominator-weighted average common shares outstanding									21,637,526	22,213,029	22,296,195
Basic EPS (in dollars per share)	$ 0.14	$ 0.24	$ 0.24	$ 0.21	$ 0.19	$ 0.25	$ 0.29	$ 0.26	$ 0.84	$ 0.98	$ 0.47
Diluted EPS computation:
Numerator-net income (in dollars)	$ 2,983	$ 5,240	$ 5,194	$ 4,652	$ 4,125	$ 5,510	$ 6,430	$ 5,755	$ 18,069	$ 21,820	$ 10,472
Denominator-weighted average common shares outstanding									21,637,526	22,213,029	22,296,195
Effect of dilutive stock options									8,000	12,000	17,000
Weighted average common shares and common stock equivalents									21,646,101	22,224,947	22,312,831
Diluted EPS (in dollars per share)	$ 0.14	$ 0.24	$ 0.24	$ 0.21	$ 0.19	$ 0.25	$ 0.29	$ 0.26	$ 0.83	$ 0.98	$ 0.47