Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - 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
Compensation expense related to stock compensation plans	$ 0	361	0	$ 0	0	361
Treasury Stock Acquired, Shares (in shares)	0			236,082
Repurchase of common stock	$ 0	0	0	$ (1,743)	0	(1,743)
Unrealized gain (loss) resulting from change in fair value of derivative instruments, net of tax	0	0	0	0	(1,120)	(1,120)
Net income (loss)	$ 0	0	2,258	$ 0	0	2,258
Balance (in shares) at Sep. 30, 2020	8,856,677			2,340,387
Balance at Sep. 30, 2020	$ 87	28,353	58,439	$ (13,445)	(2,303)	71,131
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	222	0	$ 0	0	222
Treasury Stock Acquired, Shares (in shares)	0			692
Repurchase of common stock	$ 0	0	0	$ (10)	0	(10)
Forfeiture of restricted stock (in shares)	0			16,332
Forfeiture of restricted stock	$ 0	0	0	$ 0	0	0
Unrealized gain (loss) resulting from change in fair value of derivative instruments, net of tax	0	0	0	0	954	954
Net income (loss)	$ 0	0	3,256	$ 0	0	3,256
Balance (in shares) at Sep. 30, 2021	9,004,365			2,584,821
Balance at Sep. 30, 2021	$ 88	$ 29,678	$ 70,205	$ (15,859)	$ 393	$ 84,505