Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash Flows from Operating Activities
Net income	$ 16,765	$ 27,641
Loss from discontinued operations	(405)	0
Income from continuing operations	17,170	27,641
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,006	11,856
Stock compensation expense	3,191	3,218
Net gain on sale of assets	(39)	(198)
Loss on sale of business	0	8,533
Exit activity (recoveries) costs, non-cash	(2,737)	1,074
Provision for deferred income taxes	0	196
Other, net	628	(449)
Changes in operating assets and liabilities, excluding the effects of acquisitions:
Accounts receivable	(14,446)	9,145
Inventories	2,245	4,988
Other current assets and other assets	(2,174)	(4,333)
Accounts payable	16,962	(2,427)
Accrued expenses and other non-current liabilities	(10,086)	(9,803)
Net cash provided by operating activities	21,720	49,441
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	(18,494)	(2,314)
Net proceeds from sale of property and equipment	12,778	162
Purchases of property, plant, and equipment	(3,274)	(4,035)
Net proceeds from sale of business	0	8,479
Other, net	0	1,118
Net cash (used in) provided by investing activities	(8,990)	3,410
Cash Flows from Financing Activities
Payment of debt issuance costs	0	54
Purchase of treasury stock at market prices	(1,003)	(462)
Net proceeds from issuance of common stock	247	2,057
Net cash (used in) provided by financing activities	(1,156)	1,141
Effect of exchange rate changes on cash	628	1,264
Net increase in cash and cash equivalents	12,202	55,256
Cash and cash equivalents at beginning of year	170,177	68,858
Cash and cash equivalents at end of period	$ 182,379	$ 124,114