Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash Flows from Operating Activities
Net income	$ 8,352	$ 3,996
Income from continuing operations	8,352	3,996
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,189	5,480
Stock compensation expense	2,097	1,635
Net (gain) loss on sale of assets	(7)	12
Exit activity recoveries, non-cash	(727)	(917)
Other, net	360	240
Changes in operating assets and liabilities, excluding the effects of acquisitions:
Accounts receivable	4,947	(4,462)
Inventories	(8,907)	2,338
Other current assets and other assets	1,498	410
Accounts payable	(1,694)	5,672
Accrued expenses and other non-current liabilities	(33,314)	(12,061)
Net cash (used in) provided by operating activities of continuing operations	(22,206)	2,343
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	0	(18,561)
Net proceeds from sale of property and equipment	2,823	9,233
Purchases of property, plant, and equipment	(1,033)	(1,453)
Net cash provided by (used in) investing activities	1,790	(10,781)
Cash Flows from Financing Activities
Purchase of treasury stock at market prices	(850)	(922)
Net proceeds from issuance of common stock	226	11
Net cash used in financing activities	(624)	(911)
Effect of exchange rate changes on cash	(499)	73
Net decrease in cash and cash equivalents	(21,539)	$ (9,276)
Cash and cash equivalents at beginning of year	222,280
Cash and cash equivalents at end of period	$ 200,741