Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive (Loss)Income [Member]	Retained Earnings [Member]
Beginning balance at Sep. 30, 2021	$ 140,085	$ 695	$ 21,598	$ 1,727	$ 116,065
Beginning balance, shares at Sep. 30, 2021		13,899
Net income (loss)	(12,546)				(12,546)
Other comprehensive income (loss), net of tax	(7,446)			(7,446)
Issuance of common stock	372	$ 5	367
Issuance of common stock ,shares		100
Common stock options exercised, net	391	$ 1	390
Common stock option exercise ,shares		21
Purchase of common stock to pay employee taxes	(942)	$ (1)	941
Purchase of common stock to pay employee taxes ,shares		(21)
Stock-based compensation	5,198		5,198
Ending balance at Jun. 30, 2022	125,112	$ 700	26,612	(5,719)	103,519
Ending balance ,shares at Jun. 30, 2022		13,999
Beginning balance at Mar. 31, 2022	133,263	$ 700	24,827	(1,434)	109,170
Beginning balance, shares at Mar. 31, 2022		13,990
Net income (loss)	(5,651)				(5,651)
Other comprehensive income (loss), net of tax	(4,285)			(4,285)
Issuance of common stock ,shares		9
Common stock options exercised, net	22		22
Common stock option exercise ,shares		1
Purchase of common stock to pay employee taxes	(36)		(36)
Purchase of common stock to pay employee taxes ,shares		(1)
Stock-based compensation	1,799		1,799
Ending balance at Jun. 30, 2022	125,112	$ 700	26,612	(5,719)	103,519
Ending balance ,shares at Jun. 30, 2022		13,999
Beginning balance at Sep. 30, 2022	108,392	$ 701	28,774	(9,874)	88,791
Beginning balance, shares at Sep. 30, 2022		14,029
Net income (loss)	(8,230)				(8,230)
Other comprehensive income (loss), net of tax	6,673			6,673
Issuance of common stock	453	$ 6	447
Issuance of common stock ,shares		113
Common stock options exercised, net	350	$ 1	349
Common stock option exercise ,shares		17
Purchase of common stock to pay employee taxes	(888)	$ 1	(887)
Purchase of common stock to pay employee taxes ,shares		(25)
Stock-based compensation	5,662		5,662
Ending balance at Jun. 30, 2023	112,412	$ 707	34,345	(3,201)	80,561
Ending balance ,shares at Jun. 30, 2023		14,134
Beginning balance at Mar. 31, 2023	102,554	$ 707	$ 32,446	(3,814)	73,215
Beginning balance, shares at Mar. 31, 2023		14,134
Net income (loss)	7,346				7,346
Other comprehensive income (loss), net of tax	$ 613			613
Issuance of common stock ,shares		1
Purchase of common stock to pay employee taxes ,shares	(16)	(1)	(16)
Stock-based compensation	$ 1,915		$ 1,915
Ending balance at Jun. 30, 2023	$ 112,412	$ 707	$ 34,345	$ (3,201)	$ 80,561
Ending balance ,shares at Jun. 30, 2023		14,134