Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flows From Operating Activities:
Net income (loss)	$ 18,972	$ 7,301	$ (673)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation of property and equipment	4,550	4,423	2,883
Amortization of intangible assets	3,552	3,873	2,376
Accretion of notes payable			833
Amortization of debt issuance costs	283	436	28
(Gain) loss on disposition of assets	62	15	109
Noncash lease expense	728
(Gain) loss from removal of accumulated translation adjustment		199	(202)
Stock-based compensation	2,949	2,652	1,181
Deferred income taxes	(8,995)	(1,098)	(5,476)
Changes in operating assets and liabilities:
Accounts receivable	(6,163)	(766)	(8,673)
Inventories	(9,145)	(7,203)	1,360
Prepaid and other assets	856	(827)	(1,427)
Accounts payable and accrued liabilities	2,130	2,524	(137)
Income taxes	(257)	(136)	(579)
Other			(523)
Net cash provided by (used in) operating activities	9,522	11,393	(8,920)
Cash Flows From Investing Activities:
Purchase of businesses, net of cash received		(720)	(79,238)
Proceeds from disposition of property and equipment	20	6	53
Purchase of property and equipment	(4,116)	(3,365)	(2,847)
Net cash provided by (used in) investing activities	(4,096)	(4,079)	(82,032)
Cash Flows From Financing Activities:
Proceeds from revolving credit facilities	132,215	153,556	55,778
Repayments on revolving credit facilities	(131,607)	(152,336)	(34,936)
Repayments of financing and capital leases	(31)	(39)	(22,727)
Payment of debt issuance costs	(709)	(1,032)	(334)
Purchase of treasury stock	(4,167)	(5,687)	(17)
Proceeds from exercise of stock options	1,000	467	179
Cash dividends paid	(2,987)	(1,488)
Net cash provided by (used in) financing activities	(6,286)	(6,559)	(2,057)
Effect of foreign exchange rates on cash	77	(125)	127
Change in cash	(783)	630	(92,882)
Cash, beginning of period	2,486	1,856	94,738
Cash, end of period	1,703	2,486	1,856
Supplemental Disclosure of Cash Flow Information:
Cash paid (received) for income taxes	209	418	931
Cash paid for interest	1,086	950	598
Supplemental Disclosures of Non-Cash Investing and Financing Activities:
Property and equipment purchased with accounts payable	408	219	$ 140
Property and equipment acquired through a capital lease		$ 123
Lease liabilities arising from obtaining right of use assets	$ 1,889