Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating activities
Net income	$ 6,674	$ 8,137
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,177	2,630
Stock-based compensation	1,582	1,440
Fair value adjustment to contingent consideration obligations	113	79
Provision for doubtful accounts	142	219
Provision for inventory write-downs	609	402
Foreign currency transaction loss	163	(63)
Changes in operating assets and liabilities:
Accounts receivable	441	(62)
Inventory and other deferred costs	(4,076)	(5,288)
Prepaid expenses and other assets	(197)	715
Accounts payable and other liabilities	(2,092)	(4,094)
Net cash provided by operating activities	6,536	4,115
Investing activities
Purchases of property and equipment and other assets	(1,174)	(1,651)
Payments related to acquisitions	(72,559)	0
Purchases of short-term marketable securities	(2,178)	(13,175)
Proceeds from sales of marketable securities	18,000	0
Net cash used in investing activities	(57,911)	(14,826)
Financing activities
Payments of deferred acquisition consideration	0	(59)
Proceeds from revolving line of credit	25,000	0
Proceeds from issuance of long-term debt	40,000	0
Payment of deferred debt issuance costs	(1,751)	0
Proceeds from issuance of common stock	276	1,008
Purchase of treasury stock	(57)	(23)
Common stock cash dividend paid	(3,834)	(3,344)
Net cash provided by (used in) financing activities	59,634	(2,418)
Effect of exchange rate changes on cash and cash equivalents	(69)	75
Net increase in cash and cash equivalents	8,190	(13,054)
Cash and cash equivalents at beginning of period	11,786	26,318
Cash and cash equivalents at end of period	$ 19,976	$ 13,264