Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating Activities:
Net loss	$ (688)	$ (317)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	748	711
Intangible asset amortization	144	240
Stock-based compensation	562	882
Loss on disposal of property and equipment	7	0
Restructuring costs	63	(3)
Bad debt provision	18	7
Changes in operating assets and liabilities:
Accounts receivable	3,432	(512)
Inventories	760	38
Prepaid expenses and other assets	470	23
Accounts payable	737	554
Income taxes payable	8	(22)
Other accrued liabilities	(2,011)	(39)
Deferred revenue	39	(23)
Net cash provided by operating activities	4,289	1,539
Investing Activities:
Capital expenditures	(1,516)	(311)
Purchases of short-term investments	(9,918)	(13,893)
Redemptions/maturities of short-term investments	13,866	14,177
Net cash provided by (used in) investing activities	2,432	(27)
Financing Activities:
Proceeds from issuance of common stock	59	338
Payment of withholding tax on stock-based compensation	(1,106)	(743)
Principle payments on finance leases	(20)	(26)
Purchase of common stock from repurchase program	(2,000)	0
Cash dividends	(1,032)	(1,016)
Net cash used in financing activities	(4,099)	(1,447)
Net increase in cash and cash equivalents	2,622	65
Effect of exchange rate changes on cash	(54)	61
Cash and cash equivalents, beginning of period	7,094	4,329
Cash and Cash Equivalents, End of Period	$ 9,662	$ 4,455