CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Balance at Mar. 31, 2021	$ 223	$ 63,650	$ 87,881	$ (160)	$ 151,594
Balance (in shares) at Mar. 31, 2021	22,351,235
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			17,695		17,695
Cash dividend on common stock			(3,552)		(3,552)
Exercise of stock options		17	(1)		$ 16
Exercise of stock options (in shares)	6,000				6,000
Stock repurchased	$ (2)	(1,722)			$ (1,724)
Stock repurchased (in shares)	(249,908)
Restricted stock grants (in shares)	69,285
Stock-based compensation expense		289			289
Other comprehensive income (loss), net				(1,177)	(1,177)
Balance at Dec. 31, 2021	$ 221	62,234	102,023	(1,337)	163,141
Balance (in shares) at Dec. 31, 2021	22,176,612
Balance at Sep. 30, 2021	$ 221	62,122	97,727	(310)	159,760
Balance (in shares) at Sep. 30, 2021	22,164,707
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			5,510		5,510
Cash dividend on common stock			(1,214)		(1,214)
Restricted stock grants (in shares)	11,905
Stock-based compensation expense		112			112
Other comprehensive income (loss), net				(1,027)	(1,027)
Balance at Dec. 31, 2021	$ 221	62,234	102,023	(1,337)	163,141
Balance (in shares) at Dec. 31, 2021	22,176,612
Balance at Mar. 31, 2022	$ 221	62,048	104,931	(9,951)	157,249
Balance (in shares) at Mar. 31, 2022	22,127,396
Balance at Sep. 30, 2022	$ 214	57,233	112,167	(22,452)	147,162
Balance (in shares) at Sep. 30, 2022	21,507,132
Balance at Mar. 31, 2022	$ 221	62,048	104,931	(9,951)	157,249
Balance (in shares) at Mar. 31, 2022	22,127,396
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			15,086		15,086
Cash dividend on common stock			(3,900)		(3,900)
Exercise of stock options		4			$ 4
Exercise of stock options (in shares)	1,511				1,511
Stock repurchased	$ (7)	(4,858)			$ (4,865)
Stock repurchased (in shares)	(701,291)
Restricted stock grants and forfeited, net (in shares)	68,719
Stock-based compensation expense		292			292
Purchase of subsidiary shares from noncontrolling interest		(234)			(234)
Other comprehensive income (loss), net				(11,607)	(11,607)
Balance at Dec. 31, 2022	$ 214	57,252	116,117	(21,558)	152,025
Balance (in shares) at Dec. 31, 2022	21,496,335
Balance at Sep. 30, 2022	$ 214	57,233	112,167	(22,452)	147,162
Balance (in shares) at Sep. 30, 2022	21,507,132
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			5,240		5,240
Cash dividend on common stock			(1,290)		(1,290)
Stock repurchased		(81)			(81)
Stock repurchased (in shares)	(10,797)
Stock-based compensation expense		100			100
Other comprehensive income (loss), net				894	894
Balance at Dec. 31, 2022	$ 214	$ 57,252	$ 116,117	$ (21,558)	$ 152,025
Balance (in shares) at Dec. 31, 2022	21,496,335