Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Retained Earnings
Balance at Mar. 31, 2021	$ 115,222	$ 35,064	$ (72,343)	$ 152,501
Balance (in shares) at Mar. 31, 2021		7,708,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock awards (in shares)		2,000
Share-based compensation	46	$ 46
Treasury stock	(665)		(665)
Treasury stock (in shares)		(60,000)
Net income	1,729			1,729
Balance at Jun. 30, 2021	116,332	$ 35,110	(73,008)	154,230
Balance (in shares) at Jun. 30, 2021		7,650,000
Balance at Mar. 31, 2022	116,386	$ 35,292	(74,405)	155,499
Balance (in shares) at Mar. 31, 2022		7,546,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Forfeitures shares		(28,000)
Forfeitures	(174)	$ (174)
Share-based compensation	25	$ 25
Treasury stock	(2,138)		(2,138)
Treasury stock (in shares)		(205,000)
Net income	(1,777)			(1,777)
Balance at Jun. 30, 2022	$ 112,322	$ 35,143	$ (76,543)	$ 153,722
Balance (in shares) at Jun. 30, 2022		7,313,000