Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash Flows from Operating Activities
Net income	$ 37,384	$ 41,427
Loss from discontinued operations	(405)	0
Income from continuing operations	37,789	41,427
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,427	17,551
Stock compensation expense	5,069	4,666
Net gain on sale of assets	(139)	(225)
Loss on sale of business	0	8,763
Exit activity (recoveries) costs, non-cash	(1,931)	3,876
(Benefit of) provision for deferred income taxes	(136)	355
Other, net	1,411	735
Changes in operating assets and liabilities, excluding the effects of acquisitions:
Accounts receivable	(42,310)	3,796
Inventories	2,016	9,738
Other current assets and other assets	(2,002)	(1,901)
Accounts payable	25,134	2,367
Accrued expenses and other non-current liabilities	7,503	11,038
Net cash provided by operating activities	48,831	102,186
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	12,935	249
Purchases of property, plant, and equipment	(5,152)	(7,600)
Net proceeds from sale of business	0	8,250
Other, net	0	1,118
Net cash used in investing activities	(10,711)	(297)
Cash Flows from Financing Activities
Payment of debt issuance costs	0	54
Purchase of treasury stock at market prices	(1,982)	(1,178)
Net proceeds from issuance of common stock	649	2,892
Net cash (used in) provided by financing activities	(1,733)	1,260
Effect of exchange rate changes on cash	1,468	1,055
Net increase in cash and cash equivalents	37,855	104,204
Cash and cash equivalents at beginning of year	170,177	68,858
Cash and cash equivalents at end of period	$ 208,032	$ 173,062