Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating Activities:
Net loss	$ (15,576)	$ (6,895)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	4,214	4,696
Stock-based compensation	3,747	3,399
Noncash lease expense	321	209
Amortization of debt issuance costs	182	23
Provision for credit losses	121	4
Deferred taxes	(217)	(1,577)
Other	106	184
Change in operating assets and liabilities:
Accounts receivable and contract assets	(2,346)	(2,097)
Inventories	(1,948)	(2,711)
Prepaids and other	(1,582)	(1,899)
Accounts payable	279	487
Accrued liabilities	(4,064)	(2,035)
Income taxes	2,629	(508)
Deferred revenue	(2,493)	(2,506)
Net cash used in operating activities	(16,627)	(11,226)
Investing Activities:
Purchases of property and equipment	(1,700)	(1,937)
Maturities of available-for-sale securities		7,600
Net cash (used in) provided by investing activities	(1,700)	5,663
Financing Activities:
Payments of short-term borrowings	(10,000)
Proceeds from issuance of long-term debt	29,664
Payments of debt issuance costs	(611)
Issuance of common stock	803	741
Payments for taxes related to net share settlement of equity awards	(872)	(901)
Payments for acquisition of in-process research and development	(978)	(500)
Net cash provided by (used in) financing activities	18,006	(660)
Effect of exchange rate changes on cash	503	(218)
Net change in cash and cash equivalents	182	(6,441)
Cash and Cash Equivalents:
Beginning of period	18,998	31,153
End of period	19,180	24,712
Supplemental Information:
Cash paid for income taxes	10	392
Cash paid for interest	1,393	163
Noncash investing and financing activities:
Acquisition of property and equipment, net of refundable credits in other current assets and liabilities	$ 355	105
Right-of-use assets obtained in exchange for new operating lease liabilities		$ 1,620