CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock, Common	Total
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)	375
Issuance of restricted common stock	$ 1,000	(1,000)
Forfeitures of restricted stock (shares)	(26)
Common stock repurchases, including stock surrendered for tax withholding				$ (87,000)	(86,690)
Retirements of treasury stock (in shares)	(12)
Retirements of treasury stock		(87,000)		87,000
Stock-based compensation		702,000			702,000
Net Income (Loss)			21,094,000		21,094,000
Common stock dividends paid			(8,085,000)		(8,085,000)
Balance (shares) at Dec. 31, 2022	33,808
Balance at Dec. 31, 2022	$ 34,000	43,243,000	45,861,000		89,138,000
Balance (shares) at Sep. 30, 2022	33,546
Balance at Sep. 30, 2022	$ 33,000	42,811,000	39,533,000		82,377,000
Increase (Decrease) in Stockholders' Equity
Issuance of restricted common stock (shares)	296
Issuance of restricted common stock	$ 1,000	(1,000)
Forfeitures of restricted stock (shares)	(26)
Common stock repurchases, including stock surrendered for tax withholding				(61,000)	(61,000)
Retirements of treasury stock (in shares)	(8)
Retirements of treasury stock		(61,000)		61,000
Stock-based compensation		494,000			494,000
Net Income (Loss)			10,387,000		10,387,000
Common stock dividends paid			(4,059,000)		(4,059,000)
Balance (shares) at Dec. 31, 2022	33,808
Balance at Dec. 31, 2022	$ 34,000	43,243,000	45,861,000		89,138,000
Balance (shares) at Jun. 30, 2023	33,248
Balance at Jun. 30, 2023	$ 33,000	40,098,000	51,963,000		92,094,000
Increase (Decrease) in Stockholders' Equity
Issuance of restricted common stock (shares)	288
Issuance of restricted common stock	$ 1,000	(1,000)
Common stock repurchases, including stock surrendered for tax withholding				(213,000)	(213,015)
Retirements of treasury stock (in shares)	(29)
Retirements of treasury stock		(213,000)		213,000
Stock-based compensation		1,036,000			1,036,000
Net Income (Loss)			2,556,000		2,556,000
Common stock dividends paid			(8,034,000)		(8,034,000)
Balance (shares) at Dec. 31, 2023	33,507
Balance at Dec. 31, 2023	$ 34,000	40,920,000	46,485,000		87,439,000
Balance (shares) at Sep. 30, 2023	33,440
Balance at Sep. 30, 2023	$ 33,000	40,465,000	49,424,000		89,922,000
Increase (Decrease) in Stockholders' Equity
Issuance of restricted common stock (shares)	84
Issuance of restricted common stock	$ 1,000	(1,000)
Common stock repurchases, including stock surrendered for tax withholding				(108,000)	(108,000)
Retirements of treasury stock (in shares)	(17)
Retirements of treasury stock		(108,000)		$ 108,000
Stock-based compensation		564,000			564,000
Net Income (Loss)			1,082,000		1,082,000
Common stock dividends paid			(4,021,000)		(4,021,000)
Balance (shares) at Dec. 31, 2023	33,507
Balance at Dec. 31, 2023	$ 34,000	$ 40,920,000	$ 46,485,000		$ 87,439,000