CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS EQUITY - USD ($) $ in Thousands	Common Stock Previously Reported	Common Stock Revision of Prior Period, Adjustment	Common Stock	Additional Paid-in Capital Previously Reported	Additional Paid-in Capital	Treasury Stock Previously Reported	Treasury Stock	Retained Earnings Previously Reported	Retained Earnings Revision of Prior Period, Adjustment	Retained Earnings	Previously Reported	Total
Balance at Jun. 30, 2020	$ 212	$ 184	$ 396	$ 17,766	$ 17,766	$ (19,521)	$ (19,521)	$ 79,444	$ (184)	$ 79,260	$ 77,901	$ 77,901
Balance (in shares) at Jun. 30, 2020	21,241,066	18,347,351	39,588,417			(2,893,715)	(2,893,715)
Net income										2,319		2,319
Stock-based compensation expense					104							104
Balance at Sep. 30, 2020			$ 396		17,870		$ (19,521)			81,579		80,324
Balance (in shares) at Sep. 30, 2020			39,588,417				(2,893,715)
Balance at Jun. 30, 2020	$ 212	$ 184	$ 396	17,766	17,766	$ (19,521)	$ (19,521)	79,444	(184)	79,260	77,901	77,901
Balance (in shares) at Jun. 30, 2020	21,241,066	18,347,351	39,588,417			(2,893,715)	(2,893,715)
Net income												5,516
Balance at Dec. 31, 2020			$ 396		17,954		$ (19,521)			84,776		83,605
Balance (in shares) at Dec. 31, 2020			39,588,417				(2,893,715)
Balance at Sep. 30, 2020			$ 396		17,870		$ (19,521)			81,579		80,324
Balance (in shares) at Sep. 30, 2020			39,588,417				(2,893,715)
Net income										3,197		3,197
Stock-based compensation expense					84							84
Balance at Dec. 31, 2020			$ 396		17,954		$ (19,521)			84,776		83,605
Balance (in shares) at Dec. 31, 2020			39,588,417				(2,893,715)
Balance at Jun. 30, 2021	$ 212	$ 184	$ 396	18,201	18,201	$ (19,521)	$ (19,521)	94,345	(184)	94,161	93,237	93,237
Balance (in shares) at Jun. 30, 2021	21,244,799	18,351,084	39,595,883			(2,893,715)	(2,893,715)
Net income										7,752		7,752
Stock-based compensation expense					89							89
Stock options exercised					16							16
Stock options exercised (in shares)			5,000
Balance at Sep. 30, 2021			$ 396		18,306		$ (19,521)			101,913		101,094
Balance (in shares) at Sep. 30, 2021			39,600,883				(2,893,715)
Balance at Jun. 30, 2021	$ 212	$ 184	$ 396	$ 18,201	18,201	$ (19,521)	$ (19,521)	$ 94,345	$ (184)	94,161	$ 93,237	93,237
Balance (in shares) at Jun. 30, 2021	21,244,799	18,351,084	39,595,883			(2,893,715)	(2,893,715)
Net income												8,789
Balance at Dec. 31, 2021			$ 396		19,700		$ (19,521)			102,950		103,525
Balance (in shares) at Dec. 31, 2021			39,625,471				(2,893,715)
Balance at Sep. 30, 2021			$ 396		18,306		$ (19,521)			101,913		101,094
Balance (in shares) at Sep. 30, 2021			39,600,883				(2,893,715)
Net income										1,037		1,037
Stock-based compensation expense					1,255							1,255
Stock options exercised					139							139
Stock options exercised (in shares)			24,588
Balance at Dec. 31, 2021			$ 396		$ 19,700		$ (19,521)			$ 102,950		$ 103,525
Balance (in shares) at Dec. 31, 2021			39,625,471				(2,893,715)