CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Total
Balance (shares) at Jun. 30, 2021	33,515
Balance at Jun. 30, 2021	$ 34,000	$ 42,541,000	$ 12,020,000		$ 54,595,000
Increase (Decrease) in Stockholders' Equity
Issuance of restricted common stock (shares)	197
Forfeitures of restricted stock (shares)	(80)
Common stock repurchases, including stock surrendered for tax withholding				$ (2,000)	(1,599)
Retirements of treasury stock		(2,000)		2,000
Stock-based compensation		198,000			198,000
Net income (loss)			5,218,000		5,218,000
Common stock dividends paid			(2,522,000)		(2,522,000)
Balance (shares) at Sep. 30, 2021	33,632
Balance at Sep. 30, 2021	$ 34,000	42,737,000	14,716,000		57,487,000
Balance (shares) at Jun. 30, 2022	33,471
Balance at Jun. 30, 2022	$ 33,000	42,629,000	32,852,000		75,514,000
Increase (Decrease) in Stockholders' Equity
Issuance of restricted common stock (shares)	79
Common stock repurchases, including stock surrendered for tax withholding				(26,000)	(26,407)
Retirements of treasury stock (in shares)	(4)
Retirements of treasury stock		(26,000)		$ 26,000
Stock-based compensation		208,000			208,000
Net income (loss)			10,707,000		10,707,000
Common stock dividends paid			(4,026,000)		(4,026,000)
Balance (shares) at Sep. 30, 2022	33,546
Balance at Sep. 30, 2022	$ 33,000	$ 42,811,000	$ 39,533,000		$ 82,377,000