Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid- In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Deficit
Beginning balance at Sep. 30, 2020	$ 81,519	$ 141		$ 124,435	$ (646)	$ (42,411)
Beginning balance (in shares) at Sep. 30, 2020		14,063,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	719					719
Translation adjustment	595				595
Stock compensation expense	65			65
Stock options exercised	135			135
Stock options exercised (in shares)		28,000
Ending balance at Dec. 31, 2020	83,033	$ 141		124,635	(51)	(41,692)
Ending balance (in shares) at Dec. 31, 2020		14,091,000
Beginning balance at Sep. 30, 2020	81,519	$ 141		124,435	(646)	(42,411)
Beginning balance (in shares) at Sep. 30, 2020		14,063,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	842
Ending balance at Jun. 30, 2021	83,540	$ 143		125,858	(892)	(41,569)
Ending balance (in shares) at Jun. 30, 2021		14,253,000
Beginning balance at Dec. 31, 2020	83,033	$ 141		124,635	(51)	(41,692)
Beginning balance (in shares) at Dec. 31, 2020		14,091,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	(246)					(246)
Translation adjustment	(225)				(225)
Stock compensation expense	84			84
Stock options exercised	795	$ 1		794
Stock options exercised (in shares)		131,000
Ending balance at Mar. 31, 2021	83,441	$ 142		125,513	(276)	(41,938)
Ending balance (in shares) at Mar. 31, 2021		14,222,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	369					369
Translation adjustment	(616)				(616)
Stock compensation expense	128			128
Stock options exercised	218	$ 1		217
Stock options exercised (in shares)		31,000
Ending balance at Jun. 30, 2021	83,540	$ 143		125,858	(892)	(41,569)
Ending balance (in shares) at Jun. 30, 2021		14,253,000
Beginning balance at Sep. 30, 2021	$ 85,634	$ 143		126,380	14	(40,903)
Beginning balance (in shares) at Sep. 30, 2021	14,304,492	14,304,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 997					997
Translation adjustment	237				237
Stock compensation expense	103			103
Repurchase of treasury stock	(2,713)		$ (2,713)
Repurchase of treasury stock (in shares)			(291,000)
Retirement of treasury stock		$ (3)	$ 2,713	(2,122)		(588)
Retirement of treasury stock (in shares)		(291,000)	291,000
Stock options exercised	69			69
Stock options exercised (in shares)		12,000
Ending balance at Dec. 31, 2021	84,327	$ 140		124,430	251	(40,494)
Ending balance (in shares) at Dec. 31, 2021		14,025,000
Beginning balance at Sep. 30, 2021	$ 85,634	$ 143		126,380	14	(40,903)
Beginning balance (in shares) at Sep. 30, 2021	14,304,492	14,304,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 13,184
Ending balance at Jun. 30, 2022	$ 94,623	$ 139		123,693	(563)	(28,646)
Ending balance (in shares) at Jun. 30, 2022	13,889,259	13,890,000
Beginning balance at Dec. 31, 2021	$ 84,327	$ 140		124,430	251	(40,494)
Beginning balance (in shares) at Dec. 31, 2021		14,025,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,965					1,965
Translation adjustment	102				102
Stock compensation expense	137			137
Repurchase of treasury stock	(1,402)		$ (1,402)
Repurchase of treasury stock (in shares)			(143,000)
Retirement of treasury stock		$ (1)	$ 1,402	(1,062)		(339)
Retirement of treasury stock (in shares)		(143,000)	143,000
Stock options exercised	29			29
Stock options exercised (in shares)		5,000
Ending balance at Mar. 31, 2022	85,158	$ 139		123,534	353	(38,868)
Ending balance (in shares) at Mar. 31, 2022		13,887,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	10,222					10,222
Translation adjustment	(916)				(916)
Stock compensation expense	146			146
Stock options exercised	13			13
Stock options exercised (in shares)		3,000
Ending balance at Jun. 30, 2022	$ 94,623	$ 139		$ 123,693	$ (563)	$ (28,646)
Ending balance (in shares) at Jun. 30, 2022	13,889,259	13,890,000