Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Jun. 30, 2021	9,004,365			2,567,797
Balance at Jun. 30, 2021	$ 88	$ 29,456	$ 66,949	$ (15,849)	$ (561)	$ 80,083
Compensation expense related to stock compensation plans	$ 0	733	0	$ 0	0	733
Issuance of common stock for restricted stock grants (in shares)	126,850			0
Issuance of common stock for restricted stock grants	$ 1	(1)	0	$ 0	0	$ 0
Treasury Stock Acquired, Shares (in shares)	0			397,365		397,365
Repurchase of common stock	$ 0	0	0	$ (5,105)	0	$ (5,105)
Forfeiture of restricted stock (in shares)	0			19,832
Forfeiture of restricted stock	$ (0)	(0)	(0)	$ (0)	(0)	(0)
Unrealized loss resulting from change in fair value of derivative instruments, net of tax	0	0	0	0	1,759	1,759
Net income (loss)	0	0	7,607	0	0	7,607
Forfeiture of restricted stock	$ 0	0	0	$ 0	0	0
Balance (in shares) at Mar. 31, 2022	9,131,215			2,984,994
Balance at Mar. 31, 2022	$ 89	30,188	74,556	$ (20,954)	1,198	85,077
Balance (in shares) at Dec. 31, 2021	9,004,365			2,776,623
Balance at Dec. 31, 2021	$ 88	29,923	72,052	$ (18,386)	724	84,401
Compensation expense related to stock compensation plans	$ 0	266	0	$ 0	0	266
Issuance of common stock for restricted stock grants (in shares)	126,850			0
Issuance of common stock for restricted stock grants	$ 1	(1)	0	$ 0	0	$ 0
Treasury Stock Acquired, Shares (in shares)	0			206,971		206,971
Repurchase of common stock	$ 0	0	0	$ (2,568)	0	$ (2,568)
Forfeiture of restricted stock (in shares)	0			1,400
Forfeiture of restricted stock	$ (0)	(0)	(0)	$ (0)	(0)	(0)
Unrealized loss resulting from change in fair value of derivative instruments, net of tax	0	0	0	0	474	474
Net income (loss)	0	0	2,504	0	0	2,504
Forfeiture of restricted stock	$ 0	0	0	$ 0	0	0
Balance (in shares) at Mar. 31, 2022	9,131,215			2,984,994
Balance at Mar. 31, 2022	$ 89	30,188	74,556	$ (20,954)	1,198	85,077
Balance (in shares) at Jun. 30, 2022	9,191,406			3,061,795
Balance at Jun. 30, 2022	$ 89	30,423	77,661	$ (21,352)	1,699	88,520
Compensation expense related to stock compensation plans	$ 0	725	0	$ 0	0	725
Issuance of common stock for restricted stock grants (in shares)	118,000			0
Issuance of common stock for restricted stock grants	$ 2	(2)	0	$ 0	0	$ 0
Treasury Stock Acquired, Shares (in shares)	0			164,399		164,399
Repurchase of common stock	$ 0	0	0	$ (1,503)	0	$ (1,503)
Forfeiture of restricted stock (in shares)	0			5,999
Forfeiture of restricted stock	$ (0)	(0)	(0)	$ (0)	(0)	(0)
Unrealized loss resulting from change in fair value of derivative instruments, net of tax	0	0	0	0	(1,621)	(1,621)
Net income (loss)	0	0	485	0	0	485
Forfeiture of restricted stock	$ 0	0	0	$ 0	0	0
Balance (in shares) at Mar. 31, 2023	9,309,406			3,232,193
Balance at Mar. 31, 2023	$ 91	31,146	78,146	$ (22,855)	78	86,606
Balance (in shares) at Dec. 31, 2022	9,191,406			3,177,160
Balance at Dec. 31, 2022	$ 89	30,890	80,527	$ (22,411)	435	89,530
Compensation expense related to stock compensation plans	$ 0	258	0	$ 0	0	258
Issuance of common stock for restricted stock grants (in shares)	118,000			0
Issuance of common stock for restricted stock grants	$ 2	(2)	0	$ 0	0	$ 0
Treasury Stock Acquired, Shares (in shares)	0			49,034		49,034
Repurchase of common stock	$ 0	0	0	$ (444)	0	$ (444)
Forfeiture of restricted stock (in shares)	0			5,999
Forfeiture of restricted stock	$ 0	0	0	$ 0	0	0
Unrealized loss resulting from change in fair value of derivative instruments, net of tax	0	0	0	0	(357)	(357)
Net income (loss)	0	0	(2,381)	0	0	(2,381)
Forfeiture of restricted stock	$ 0	0	0	$ 0	0	0
Balance (in shares) at Mar. 31, 2023	9,309,406			3,232,193
Balance at Mar. 31, 2023	$ 91	$ 31,146	$ 78,146	$ (22,855)	$ 78	$ 86,606