CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Operating activities
Net loss	$ (49,204)	$ (49,598)
Adjustments to reconcile net loss to net cash from operating activities:
Depreciation, depletion and amortization	23,325	24,165
Provision for inventory obsolescence	1,013	1,132
Restructuring expenses	516	8,443
Stock-based compensation expense	2,293	4,021
Non-cash operating lease expense	6,311	7,718
Non-cash loss from asset disposition	11,103	0
Other	827	1,089
Changes in assets and liabilities:
Accounts receivable	819	183
Inventories	8,854	22,566
Prepaid expenses and other current assets	790	1,174
Other assets	(113)	(164)
Accounts payable	(2,258)	(542)
Accrued expenses and other current liabilities	147	(4,419)
Deferred revenue	(411)	(87)
Lease liabilities	(7,081)	(6,972)
Other long-term liabilities	89	(80)
Net cash (used in) from operating activities	(2,980)	8,629
Investing activities
Capital expenditures of property, plant and equipment	(2,622)	(4,056)
Cash proceeds from Asset Sale for property, plant and equipment	3,700	0
Other	383	(2)
Net cash from (used in) investing activities	1,461	(4,058)
Financing activities
Proceeds from Sale-Leaseback Transaction	0	8,598
Borrowings under foreign revolving credit facilities	334	753
Repayments of foreign revolving credit facilities	(345)	(778)
Repayments of Term Loan	(2,890)	(938)
Payment of withholding tax related to stock awards	(127)	(234)
Finance lease principal payments	(1,259)	(757)
Net cash (used in) from financing activities	(4,287)	6,644
Effect of exchange rate changes on cash and cash equivalents	(102)	(49)
Net (decrease) increase in cash and cash equivalents	(5,908)	11,166
Cash and cash equivalents at beginning of period	30,312	21,291
Cash and cash equivalents at end of period	24,404	32,457
Non-cash investing and financing activities
Right-of-use assets relinquished under operating lease obligations, net	(1,924)	(768)
Assets acquired under finance lease obligations	0	185
Capital expenditures included in accounts payable and accrued liabilities	55	31
Supplemental information
Cash paid for interest	12,038	10,519
Cash paid (refunded) for income taxes	$ 130	$ (1,039)