Consolidated Statements of Changes in Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Convertible Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings
Balance (in shares) at Mar. 31, 2020		3	20,166
Balance at Mar. 31, 2020	$ 130,010	$ 9	$ 20	$ 3,804	$ 126,177
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock, net (in shares)			103
Share based compensation	3,307			3,307
Dividends declared	(22,639)				(22,639)
Net income	30,603				30,603
Balance (in shares) at Mar. 31, 2021		3	20,269
Balance at Mar. 31, 2021	141,281	$ 9	$ 20	7,111	134,141
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock, net (in shares)			710
Issuance of restricted stock, net	1		$ 1
Share based compensation	4,549			4,549
Dividends declared	(24,745)				(24,745)
Net income	21,100				21,100
Balance (in shares) at Mar. 31, 2022		3	20,979
Balance at Mar. 31, 2022	142,186	$ 9	$ 21	11,660	130,496
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock, net (in shares)			105
Share based compensation	6,617			6,617
Dividends declared	(25,241)				(25,241)
Net income	233				233
Balance (in shares) at Mar. 31, 2023		3	21,084
Balance at Mar. 31, 2023	$ 123,795	$ 9	$ 21	$ 18,277	$ 105,488