Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating Activities:
Net income (loss)	$ 819	$ (167)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	2,231	2,257
Intangible asset amortization	257	171
Stock-based compensation	3,007	2,029
Loss on disposal of property and equipment	0	3
Restructuring costs	(291)	(15)
Bad debt provision	70	(39)
Changes in operating assets and liabilities:
Accounts receivable	(2,081)	2,162
Inventories	(3,402)	(1,734)
Prepaid expenses and other assets	574	932
Deferred tax assets	(484)	0
Accounts payable	974	(700)
Income taxes payable	15	(15)
Other accrued liabilities	(175)	1,405
Deferred revenue	(93)	82
Net cash provided by operating activities	1,421	6,371
Investing Activities:
Capital expenditures	(550)	(2,006)
Purchases of investments	(21,971)	(21,124)
Redemptions/maturities of short-term investments	22,386	33,666
Cash paid for acquisition, net of cash acquired	0	(6,277)
Net cash (used in) provided by investing activities	(135)	4,259
Financing Activities:
Proceeds from issuance of common stock	404	418
Payment of withholding tax on stock-based compensation	(396)	(782)
Principal payments on finance leases	(48)	(54)
Purchase of common stock from repurchase program	0	(3,193)
Cash dividends	(3,048)	(3,020)
Net cash used in financing activities	(3,088)	(6,631)
Net (decrease) increase in cash and cash equivalents	(1,802)	3,999
Effect of exchange rate changes on cash	(532)	12
Cash and cash equivalents, beginning of period	8,192	5,761
Cash and Cash Equivalents, End of Period	$ 5,858	$ 9,772