Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Operating Activities
Net (loss) income	$ (12,582)	$ 17,367	$ 1,508
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation and amortization	5,012	1,729	1,398
Write-down of inventory	2,620	102	544
Non-cash intangible asset impairment	5,189
Provision for allowance for doubtful accounts	14	(32)	44
Deferred income taxes	(2,513)	592	(65)
Non-cash stock-based compensation expense	1,272	543	401
Gain on sale of fixed assets		(12,465)
Other, net	196		43
Changes in operating assets and liabilities:
Accounts receivable	4,410	(2,479)	(11,023)
Inventories	(6,294)	(3,684)	(5,180)
Contract and other assets	(529)	(2,203)	(686)
Accounts payable	1,459	(1,080)	5,472
Accrued income taxes	(2,897)	623	353
Accrued and other liabilities	(1,895)	584	829
Contract liabilities	(1,163)	5,607	400
Net cash (used in) provided by operating activities	(7,701)	5,204	(5,962)
Investing Activities
Purchases of property, plant and equipment	(2,898)	(1,135)	(3,012)
Acquisitions, net of cash and cash equivalents acquired	(34,938)		(5,082)
Proceeds from sale of property, plant and equipment	6	19,908
Net cash (used in) provided by investing activities	(37,830)	18,773	(8,094)
Financing Activities
Proceeds from the exercise of stock options	1,235	720	1,546
Repurchase of common stock		(4,115)
Payments on long-term debt	(1,497)	(4,872)	(380)
Borrowings on long-term debt	12,000
Net cash provided by (used in) financing activities	11,738	(8,267)	1,166
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	52	(1,672)	656
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	(33,741)	14,038	(12,234)
Cash, Cash Equivalents and Restricted Cash, Beginning of Year	46,874	32,836	45,070
Cash, Cash Equivalents and Restricted Cash, End of Year	13,133	46,874	32,836
Supplemental Cash Flow Information:
Income tax payments, net	2,818	386	1,868
Interest paid	461	164	241
Supplemental Non-cash Operating, Financing and Investing Activities:
Transfer of inventory to property, plant, and equipment		169	39
Payables due for fixed asset additions	633	152
Return of fixed assets resulting in loan payoff	184
Modification of leased assets resulting in a reduction of lease liabilities	2,254
Leased assets obtained in exchange for new operating lease liabilities	57	3,686	3,680
Leased assets obtained in exchange for new finance lease liabilities	$ 46	$ 42	160
Accrued for asset retirement obligation			$ 36