Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net loss	$ (9,734)	$ (4,122)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	1,166	1,049
Depreciation and amortization	1,081	1,040
Reversal of uncertain tax positions	(2)	(121)
Deferred income tax expense (benefit)	0	364
Amortization of acquired intangible assets	0	90
Changes in operating assets and liabilities:
Accounts receivable, net	2,130	144
Inventories	(547)	(325)
Prepaid expenses and other current and long-term assets, net	3,046	230
Accounts payable	(1,442)	407
Accrued current and long-term liabilities	(2,090)	(4,026)
Income taxes payable	(113)	52
Net cash used in operating activities	(6,505)	(5,218)
Cash flows from investing activities:
Purchases of property and equipment	(2,005)	(540)
Purchases of licensed technology	0	(517)
Net cash used in investing activities	(2,005)	(1,057)
Cash flows from financing activities:
Net proceeds from issuance of equity interest to non-controlling interest	14,596	0
Payments on asset financings	(222)	(367)
Proceeds from issuance of common stock under employee equity incentive plans	156	217
Net cash provided by financing activities	14,530	(150)
Net increase (decrease) in cash and cash equivalents	6,020	(6,425)
Cash and cash equivalents, beginning of period	56,821	61,587
Cash and cash equivalents, end of period	62,841	55,162
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	43	41
Cash paid for income taxes, net of refunds received	146	108
Non-cash investing and financing activities:
Acquisitions of property and equipment and other assets under extended payment terms	$ 1,888	$ 0