CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash Flows From Operating Activities:
Net income	$ 8,429	$ 4,884
Adjustments to reconcile net income to net cash provided by operating activities (net of working capital acquired in 2018):
Depreciation and amortization	5,622	4,960
Deferred income taxes	(282)	14
Stock compensation expense	1,094	954
Debt issue cost amortization recorded in interest expense	74	99
Other	133	(40)
Changes in operating assets and liabilities:
Trade receivables	(7,639)	(4,442)
Inventories	(6,840)	529
Prepaid expenses and other assets	(504)	93
Accounts payable	5,788	(360)
Accrued liabilities	1,511	692
Net cash provided by operating activities	7,386	7,383
Cash Flows From Investing Activities:
Purchase of property and equipment	(5,555)	(2,677)
Cash paid for acquisition, net of cash acquired	(13,312)
Net cash used in investing activities	(18,867)	(2,677)
Cash Flows From Financing Activities:
Borrowings on lines-of-credit, net	14,252
Principal payments of long-term debt	(2,500)	(6,000)
Dividends paid to stockholders	(522)	(473)
Stock transactions under employee benefit stock plans	261	355
Net cash provided by (used in) financing activities	11,491	(6,118)
Effect of foreign exchange rate changes on cash	(271)	662
Net decrease in cash and cash equivalents	(261)	(750)
Cash and cash equivalents at beginning of period	15,590	15,483
Cash and cash equivalents at end of period	$ 15,329	$ 14,733