Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash Flows from Operating Activities
Net income	$ 23,482	$ 9,596
Loss from discontinued operations	0	(28)
Income from continuing operations	23,482	9,624
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	11,856	13,239
Stock compensation expense	3,218	1,406
Net gain on sale of assets	(198)	(8,375)
Loss on sale of business	8,533	0
Restructuring charges, non-cash	1,074	2,745
Provision for (benefit of) deferred income taxes	196	(72)
Other, net	(741)	(1,392)
Changes in operating assets and liabilities, excluding the effects of acquisitions:
Accounts receivable	9,145	(30,164)
Inventories	4,988	1,596
Other current assets and other assets	(4,333)	(1,415)
Accounts payable	(2,427)	20,254
Accrued expenses and other non-current liabilities	(5,644)	4,312
Net cash provided by operating activities	49,149	11,758
Cash Flows from Investing Activities
Cash paid for acquisitions	(2,314)	(134,318)
Net proceeds from sale of property and equipment	162	26,181
Purchases of property, plant, and equipment	(4,035)	(4,624)
Net proceeds from sale of business	8,479	0
Other, net	1,118	1,154
Net cash provided by (used in) investing activities	3,410	(111,607)
Cash Flows from Financing Activities
Payment of debt issuance costs	54	0
Purchase of treasury stock at market prices	(462)	(387)
Net proceeds from issuance of common stock	2,057	180
Excess tax benefit from stock compensation	292	37
Net cash provided by financing activities	1,433	29,430
Effect of exchange rate changes on cash	1,264	(769)
Net increase (decrease) in cash and cash equivalents	55,256	(71,188)
Cash and cash equivalents at beginning of year	68,858	110,610
Cash and cash equivalents at end of period	$ 124,114	$ 39,422