Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating Activities
Net income	$ 13,184	$ 842
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	1,330	1,038
Write-down of inventory	235	278
Non-cash stock compensation expense	386	277
Gain on sale of property, plant and equipment	(12,465)
Provision for allowance for doubtful accounts	10	16
Other, net		8
Changes in operating assets and liabilities:
Accounts receivable	1,714	(9,385)
Inventories	(5,617)	(3,328)
Other assets	(1,298)	(324)
Accounts payable	1,603	5,815
Accrued income taxes	713	536
Accrued and other liabilities	1,031	809
Contract liabilities	4,264	646
Net cash provided by (used in) operating activities	5,090	(2,772)
Investing Activities
Purchases of property, plant and equipment	(325)	(790)
Proceeds from the sale of property, plant and equipment	19,908
Acquisition, net of cash and cash equivalents acquired		(5,082)
Net cash provided by (used in) investing activities	19,583	(5,872)
Financing Activities
Proceeds from the exercise of stock options	111	1,148
Repurchase of common stock	(4,115)
Payments on long-term debt	(4,851)	(284)
Net cash (used in) provided by financing activities	(8,855)	864
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	(441)	(250)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	15,377	(8,030)
Cash and Cash Equivalents , Beginning of Period	32,836	45,070
Cash, Cash Equivalents and Restricted Cash, End of Period	48,213	37,040
Supplemental Cash Flow Information:
Income tax payments, net	30	991
Interest paid	$ 166	$ 166