Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net income	$ 982	$ 5,867	$ 2,954	$ 5,350
Series A convertible preferred stock issuance costs		(94)		(1,031)
Series A convertible preferred stock dividends	(459)	(459)	(918)	(658)
Net income attributable to common shareholders	$ 523	$ 5,314	$ 2,036	$ 3,661
Denominator:
Weighted average shares outstanding - basic	24,451	23,424	24,233	23,415
Dilutive SSARs	892	342	1,005	329
Dilutive unvested restricted shares	66	100	58	105
Weighted average shares outstanding - diluted	25,409	23,866	25,296	23,849
Net income per share - basic:	$ 0.02	$ 0.23	$ 0.08	$ 0.16
Net income per share - diluted:	$ 0.02	$ 0.22	$ 0.08	$ 0.15
Earnings Per Share, Diluted [Abstract]
Anti-dilutive SSARs, restricted shares and preferred shares	1,735	2,415	1,735	2,418