Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect Adjustment for ASU Implementation [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total	Cumulative Effect Adjustment for ASU Implementation [Member]
Balance at Jun. 30, 2022	$ 1,722	$ 10,156	$ 165,127		$ (18,383)	$ (908)	$ 157,714
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared			(1,645)				(1,645)
Net income			24,325				24,325
Other comprehensive income (loss), net of taxes					(1,716)		(1,716)
Balance at Mar. 31, 2023	1,722	10,156	187,807		(20,099)	(908)	178,678
Balance at Dec. 31, 2022	1,722	10,156	180,263		(23,026)	(908)	168,207
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared			(547)				(547)
Net income			8,091				8,091
Other comprehensive income (loss), net of taxes					2,927		2,927
Balance at Mar. 31, 2023	1,722	10,156	187,807		(20,099)	(908)	178,678
Balance at Jun. 30, 2023	1,722	10,156	193,721		(21,408)	(908)	183,283
Balance (Accounting Standards Update 2016-13 [Member]) at Jun. 30, 2023				$ (510)				$ (510)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared			(2,616)				(2,616)
Net income			18,037				18,037
Other comprehensive income (loss), net of taxes					991		991
Balance at Mar. 31, 2024	1,722	10,156	208,632		(20,417)	(908)	199,185
Balance at Dec. 31, 2023	1,722	10,156	203,396		(19,070)	(908)	195,296
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared			(625)				(625)
Net income			5,861				5,861
Other comprehensive income (loss), net of taxes					(1,347)		(1,347)
Balance at Mar. 31, 2024	$ 1,722	$ 10,156	$ 208,632		$ (20,417)	$ (908)	$ 199,185