Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Jun. 30, 2020	8,856,677			2,104,305
Balance at Jun. 30, 2020	$ 87	$ 27,992	$ 56,181	$ (11,702)	$ (1,183)	$ 71,375
Issuance of common stock for restricted stock grants (in shares)	91,773			0
Issuance of common stock for restricted stock grants	$ 1	(1)	0	$ 0	0	0
Compensation expense related to stock compensation plans	$ 0	1,430	0	$ 0	0	$ 1,430
Treasury Stock Acquired, Shares (in shares)	0			433,050		463,492
Repurchase of common stock	$ 0	0	0	$ (3,844)	0	$ (3,844)
Issuance of common stock for stock option exercise (in shares)	55,915			30,442
Issuance of common stock for stock option exercise	$ 0	35	0	$ (303)	0	(268)
Change in minimum pension liability, net of tax	0	0	0	0	350	350
Unrealized gain resulting from change in fair value of derivative instruments, net of tax	0	0	0	0	272	272
Net income (loss)	$ 0	0	10,768	$ 0	0	10,768
Repurchase of common stock						(4,147)
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
Issuance of common stock for restricted stock grants (in shares)	135,850			0
Issuance of common stock for restricted stock grants	$ 1	(1)	0	$ 0	0	0
Compensation expense related to stock compensation plans	$ 0	968	0	$ 0	0	$ 968
Treasury Stock Acquired, Shares (in shares)	0			435,080		435,080
Issuance of common stock for stock option exercise (in shares)						130,000
Change in minimum pension liability, net of tax	$ 0	0	0	$ 0	94	$ 94
Unrealized gain resulting from change in fair value of derivative instruments, net of tax	0	0	0	0	2,166	2,166
Net income (loss)	0	0	10,712	0	0	10,712
Repurchase of common stock	$ 0	0	0	$ (5,503)	0	(5,503)
Forfeiture of restricted stock (in shares)	0			19,832
Forfeiture of restricted stock	$ 0	0	0	$ 0	0	0
Share Correction	$ 0	0	0	$ 0	0	0
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
Share Correction (in shares)	51,191			39,086