Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net loss	$ (9,571)	$ (16,031)
Adjustments to reconcile net loss income to net cash used in operating activities:
Depreciation and amortization expense	921	1,107
Stock-based compensation expense	621	736
Unrealized foreign exchange (gain) loss	(476)	783
Non-cash lease expense	381	367
Provision for credit losses	84	77
Impairment of long-term assets	80	0
Non-cash interest expense	39	41
Changes in operating assets and liabilities:
Accounts receivable	1,137	(1,136)
Royalty and licensing receivable	14	(372)
Inventories	(580)	(447)
Prepaid expenses and other assets	113	(120)
Accounts payable, accrued expenses and other liabilities	(2,610)	(2,107)
Net cash used in operating activities	(9,847)	(17,102)
Cash flows from investing activities:
Acquisition of property and equipment	(907)	(692)
Net cash used in investing activities	(907)	(692)
Cash flows from financing activities:
Net cash provided by financing activities	0	0
Foreign exchange effect on cash and cash equivalents	(127)	(45)
Decrease in cash, cash equivalents and restricted cash	(10,881)	(17,839)
Cash, cash equivalents and restricted cash beginning of period	49,129	101,118
Cash, cash equivalents and restricted cash end of period	38,248	83,279
Supplemental information:
Cash paid for interest	545	356
Non cash investing and financing activities:
Operating leases right-of-use assets obtained in exchange for lease obligations	$ 0	$ 63