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)	254
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		528,000			528,000
Net income (loss)			12,051,000		12,051,000
Common stock dividends paid			(5,045,000)		(5,045,000)
Balance (shares) at Dec. 31, 2021	33,689
Balance at Dec. 31, 2021	$ 34,000	43,067,000	19,026,000		62,127,000
Balance (shares) at Sep. 30, 2021	33,632
Balance at Sep. 30, 2021	$ 34,000	42,737,000	14,716,000		57,487,000
Increase (Decrease) in Stockholders' Equity
Issuance of restricted common stock (shares)	57
Stock-based compensation		330,000			330,000
Net income (loss)			6,833,000		6,833,000
Common stock dividends paid			(2,523,000)		(2,523,000)
Balance (shares) at Dec. 31, 2021	33,689
Balance at Dec. 31, 2021	$ 34,000	43,067,000	19,026,000		62,127,000
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)	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