CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	AOCI Attributable to Parent	Total
Beginning Balance at Jun. 30, 2019	$ 93	$ 94,541	$ 143,677	$ (1,166)	$ 1,247	$ 238,392
Net Income			15,545			15,545
Change in unrealized gain on available for sale securities					400	400
Dividends paid on common stock ($.15 per share)			(2,763)			(2,763)
Stock option expense		31				31
Stock grant expense		46				46
Exercise of stock options		32				32
Treasury stock purchased				(2,814)		(2,814)
Ending Balance at Dec. 31, 2019	93	94,650	156,459	(3,980)	1,647	248,869
Beginning Balance at Sep. 30, 2019	93	94,572	150,123	(3,980)	1,454	242,262
Net Income			7,717			7,717
Change in unrealized gain on available for sale securities					193	193
Dividends paid on common stock ($.15 per share)			(1,381)			(1,381)
Stock option expense		14				14
Stock grant expense		32				32
Exercise of stock options		32				32
Ending Balance at Dec. 31, 2019	93	94,650	156,459	(3,980)	1,647	248,869
Beginning Balance at Jun. 30, 2020	93	95,035	165,709	(6,937)	4,447	258,347
Impact of ASU 2016-13 adoption			(7,151)			(7,151)
Net Income			22,033			22,033
Change in unrealized gain on available for sale securities					(246)	(246)
Dividends paid on common stock ($.15 per share)			(2,730)			(2,730)
Stock option expense		74				74
Treasury stock purchased				(2,638)		(2,638)
Ending Balance at Dec. 31, 2020	93	95,109	177,861	(9,575)	4,201	267,689
Beginning Balance at Sep. 30, 2020	93	95,058	167,175	(6,937)	4,586	259,975
Net Income			12,048			12,048
Change in unrealized gain on available for sale securities					(385)	(385)
Dividends paid on common stock ($.15 per share)			(1,362)			(1,362)
Stock option expense		51				51
Treasury stock purchased				(2,638)		(2,638)
Ending Balance at Dec. 31, 2020	$ 93	$ 95,109	$ 177,861	$ (9,575)	$ 4,201	$ 267,689