CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Beginning Balance at Sep. 30, 2020	$ 160,970	$ 137	$ 90,965	$ 86,566	$ (16,698)
Beginning Balance, Shares at Sep. 30, 2020		13,670,639
Net loss	(1,050)			(1,050)
Other comprehensive income (loss)	197				197
Issuance of common stock pursuant to the vesting of restricted stock units		$ 1
Issuance of common stock pursuant to the vesting of restricted stock units, Shares		57,332
Purchase of treasury stock	(828)					$ (828)
Purchase of treasury stock, Shares		(117,637)
Stock-based compensation	548		548
Ending Balance at Dec. 31, 2020	159,837	$ 138	91,513	85,516	(16,501)	(828)
Ending Balance, Shares at Dec. 31, 2020		13,610,334
Beginning Balance at Sep. 30, 2021	$ 142,457	$ 137	92,935	72,510	(16,320)	(6,805)
Beginning Balance, Shares at Sep. 30, 2021	12,969,542	12,969,542
Net loss	$ (6,768)			(6,768)
Other comprehensive income (loss)	(142)				(142)
Issuance of common stock pursuant to the vesting of restricted stock units	1	$ 1
Issuance of common stock pursuant to the vesting of restricted stock units, Shares		84,762
Purchase of treasury stock	(695)					(695)
Purchase of treasury stock, Shares		(72,563)
Stock-based compensation	536		536
Ending Balance at Dec. 31, 2021	$ 135,389	$ 138	$ 93,471	$ 65,742	$ (16,462)	$ (7,500)
Ending Balance, Shares at Dec. 31, 2021	12,981,741	12,981,741