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, 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	467	0	0	0	467
Unrealized loss resulting from change in fair value of derivative instruments, net of tax	0	0	0	0	(1,264)	(1,264)
Net income (loss)	$ 0	0	2,866	$ 0	0	$ 2,866
Treasury Stock Acquired, Shares (in shares)	0			115,365		115,365
Repurchase of common stock	$ 0	0	0	$ (1,059)	0	$ (1,059)
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
Balance (in shares) at Sep. 30, 2022	9,191,406			3,108,590
Balance at Sep. 30, 2022	$ 89	30,658	78,714	$ (21,849)	2,244	89,856
Compensation expense related to stock compensation plans	0	232	0	0	0	232
Unrealized loss resulting from change in fair value of derivative instruments, net of tax	0	0	0	0	(1,809)	(1,809)
Net income (loss)	$ 0	0	1,813	$ 0	0	$ 1,813
Treasury Stock Acquired, Shares (in shares)	0			68,570		68,570
Repurchase of common stock	$ 0	0	0	$ (562)	0	$ (562)
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
Balance (in shares) at Jun. 30, 2023	9,314,406			3,240,593		6,073,813
Balance at Jun. 30, 2023	$ 91	31,436	80,183	$ (22,855)	(83)	$ 88,772
Compensation expense related to stock compensation plans	$ 0	607	0	$ 0	0	607
Issuance of common stock for restricted stock grants (in shares)	15,000			0
Issuance of common stock for restricted stock grants	$ 0	0	0	$ 0	0	0
Change in minimum pension liability, net of tax	0	0	0	0	(10)	(10)
Unrealized loss resulting from change in fair value of derivative instruments, net of tax	0	0	0	0	(149)	(149)
Net income (loss)	$ 0	0	(3,765)	$ 0	0	$ (3,765)
Treasury Stock Acquired, Shares (in shares)						0
Balance (in shares) at Dec. 31, 2023	9,329,406			3,240,593		6,088,813
Balance at Dec. 31, 2023	$ 91	32,043	76,418	$ (22,855)	(242)	$ 85,455
Balance (in shares) at Sep. 30, 2023	9,329,406			3,240,593
Balance at Sep. 30, 2023	$ 91	31,738	79,488	$ (22,855)	353	88,815
Compensation expense related to stock compensation plans	$ 0	305	0	$ 0	0	305
Issuance of common stock for restricted stock grants (in shares)	0			0
Issuance of common stock for restricted stock grants	$ 0	0	0	$ 0	0	0
Change in minimum pension liability, net of tax	0	0	0	0	(5)	(5)
Unrealized loss resulting from change in fair value of derivative instruments, net of tax	0	0	0	0	(590)	(590)
Net income (loss)	$ 0	0	(3,070)	$ 0	0	$ (3,070)
Treasury Stock Acquired, Shares (in shares)						0
Balance (in shares) at Dec. 31, 2023	9,329,406			3,240,593		6,088,813
Balance at Dec. 31, 2023	$ 91	$ 32,043	$ 76,418	$ (22,855)	$ (242)	$ 85,455