Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income	$ 659	$ 565
Adjustments to reconcile net income to net cash used by operating activities:
Depreciation	396	357
Amortization	278	218
Stock compensation expense	115	102
Changes in operating assets and liabilities:
Accounts receivable	(574)	1,748
Inventories	502	(1,619)
Prepaid expenses and other assets	(566)	(626)
Accounts payable	(1,591)	(489)
Other accrued liabilities	(2,271)	(2,611)
Total adjustments	(3,711)	(2,920)
Net cash used by operating activities	(3,052)	(2,355)
Cash flows from investing activities:
Purchase of property, plant, and equipment	(504)	(449)
Purchase of patents and trademarks		(10)
Acquisition of businesses	(7,233)	(6,971)
Net cash used by investing activities	(7,737)	(7,430)
Cash flows from financing activities:
Net borrowings of long-term debt	11,436	9,783
Cash settlement of stock options	(231)	(130)
Proceeds from issuance of common stock	186	351
Distributions to stockholders	(332)	(335)
Purchase of treasury stock		(846)
Net cash provided by financing activities	11,059	8,823
Effect of exchange rate changes on cash and cash equivalents	(6)	10
Net increase (decrease) in cash and cash equivalents	264	(952)
Cash and cash equivalents at beginning of period	5,911	2,426
Cash and cash equivalents at end of period	6,175	1,474
Supplemental cash flow information:
Cash paid for income taxes	59	589
Cash paid for interest	$ 236	$ 164