CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating activities
Net loss	$ (12,608)	$ (16,849)
Adjustments to reconcile net loss to net cash from operating activities:
Depreciation, depletion and amortization	7,885	8,007
Provision for (benefit from) doubtful accounts	80	(247)
Provision for inventory obsolescence	568	704
Restructuring expenses	7	327
Stock-based compensation expense	853	1,182
Non-cash operating lease expense	2,244	2,948
Other	(44)	456
Changes in assets and liabilities:
Accounts receivable	(5,715)	(5,141)
Inventories	2,156	7,321
Prepaid expenses and other current assets	442	(699)
Other assets	100	(188)
Accounts payable	2,892	(346)
Accrued expenses and other current liabilities	1,282	(3,139)
Deferred revenue	(370)	(1,116)
Lease liabilities	(1,976)	(2,166)
Other long-term liabilities	(93)	(4)
Net cash used in operating activities	(2,297)	(8,950)
Investing activities
Capital expenditures of property, plant and equipment	(1,442)	(1,653)
Other	34	51
Net cash used in investing activities	(1,408)	(1,602)
Financing activities
Proceeds from Sale-Leaseback Transaction	0	8,598
Borrowings under foreign revolving credit facilities	158	169
Repayments of foreign revolving credit facilities	(190)	(116)
Repayments of Term Loan	(1,974)	(312)
Payment of withholding tax related to stock awards	(97)	(123)
Finance lease principal payments	(255)	(257)
Net cash (used in) from financing activities	(2,358)	7,959
Effect of exchange rate changes on cash and cash equivalents	(97)	5
Net decrease in cash and cash equivalents	(6,160)	(2,588)
Cash and cash equivalents cash at beginning of period	30,312	21,291
Cash and cash equivalents at end of period	24,152	18,703
Non-cash investing and financing activities
Right-of-use assets relinquished under operating lease obligations	0	(1,103)
Assets acquired under finance lease obligations	0	185
Capital expenditures included in accounts payable and accrued liabilities	155	847
Supplemental information
Cash paid for interest	4,708	3,401
Cash paid for income taxes	$ 5	$ 180