CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Total
Balance at Jun. 30, 2022	$ 396	$ 20,005	$ (19,521)	$ 112,911	$ 113,791
Balance (in shares) at Jun. 30, 2022	39,628,197		(2,893,715)
Net income				3,084	3,084
Stock-based compensation expense		477			477
Stock options exercised		45			45
Stock options exercised (in shares)	8,480
Balance at Sep. 30, 2022	$ 396	20,527	$ (19,521)	115,995	117,397
Balance (in shares) at Sep. 30, 2022	39,636,677		(2,893,715)
Balance at Jun. 30, 2022	$ 396	20,005	$ (19,521)	112,911	113,791
Balance (in shares) at Jun. 30, 2022	39,628,197		(2,893,715)
Net income					7,013
Balance at Dec. 31, 2022	$ 396	20,862	$ (19,521)	119,924	121,661
Balance (in shares) at Dec. 31, 2022	39,639,433		(2,893,715)
Balance at Jun. 30, 2022	$ 396	20,005	$ (19,521)	112,911	113,791
Balance (in shares) at Jun. 30, 2022	39,628,197		(2,893,715)
Balance at Jun. 30, 2023	$ 397	21,553	$ (19,521)	137,740	140,169
Balance (in shares) at Jun. 30, 2023	39,663,812		(2,893,715)
Balance at Sep. 30, 2022	$ 396	20,527	$ (19,521)	115,995	117,397
Balance (in shares) at Sep. 30, 2022	39,636,677		(2,893,715)
Net income				3,929	3,929
Stock-based compensation expense		335			335
Stock options exercised (in shares)	2,756
Balance at Dec. 31, 2022	$ 396	20,862	$ (19,521)	119,924	121,661
Balance (in shares) at Dec. 31, 2022	39,639,433		(2,893,715)
Balance at Jun. 30, 2023	$ 397	21,553	$ (19,521)	137,740	140,169
Balance (in shares) at Jun. 30, 2023	39,663,812		(2,893,715)
Net income				10,478	10,478
Stock-based compensation expense		307			307
Cash dividend ($.08 per share)				(2,942)	(2,942)
Balance at Sep. 30, 2023	$ 397	21,860	$ (19,521)	145,276	148,012
Balance (in shares) at Sep. 30, 2023	39,663,812		(2,893,715)
Balance at Jun. 30, 2023	$ 397	21,553	$ (19,521)	137,740	140,169
Balance (in shares) at Jun. 30, 2023	39,663,812		(2,893,715)
Net income					23,088
Balance at Dec. 31, 2023	$ 397	22,163	$ (19,521)	154,945	157,984
Balance (in shares) at Dec. 31, 2023	39,675,704		(2,893,715)
Balance at Sep. 30, 2023	$ 397	21,860	$ (19,521)	145,276	148,012
Balance (in shares) at Sep. 30, 2023	39,663,812		(2,893,715)
Net income				12,610	12,610
Stock-based compensation expense		303			303
Stock options exercised (in shares)	11,892
Cash dividend ($.08 per share)				(2,941)	(2,941)
Balance at Dec. 31, 2023	$ 397	$ 22,163	$ (19,521)	$ 154,945	$ 157,984
Balance (in shares) at Dec. 31, 2023	39,675,704		(2,893,715)