CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating Activities:
Net income	$ 14,928	$ 13,643
Adjustments to reconcile net income to cash from operating activities:
Depreciation and amortization	8,973	7,973
Stock-based compensation expense	1,992	1,598
Deferred income taxes	1,013	1,330
Equity in undistributed income of unconsolidated joint ventures	(613)	(919)
Dividends received from unconsolidated joint ventures	0	780
Pension and postretirement benefits	(702)	(294)
Changes in operating assets and liabilities, excluding effects of acquisitions:
Accounts receivable	(6,657)	(5,632)
Inventories	(1,021)	(6,734)
Pension contribution	(63)
Other current assets	(1,621)	(3,431)
Accounts payable and other accrued expenses	8,307	4,352
Other, net	1,651	243
Net cash provided by operating activities	26,187	12,909
Investing Activities:
Business acquisition, net of cash acquired	0	(155,778)
Capital expenditures	(4,813)	(8,486)
Net cash used in investing activities	(4,813)	(164,264)
Financing Activities:
Proceeds from long term borrowings		125,000
Repayment of debt principal and long term lease obligation	(757)	(5,065)
Repurchases of capital stock	(1,997)	0
Proceeds from sale of capital stock, net	564	5,290
Issuance of restricted stock shares	(1,175)	(2,258)
Proceeds from issuance of shares to employee stock purchase plan	427	345
Net cash (used in) provided by financing activities	(2,938)	123,312
Effect of exchange rate fluctuations on cash	6,181	(9,474)
Net increase (decrease) in cash and cash equivalents	24,617	(37,517)
Cash and cash equivalents at beginning of period	204,586	237,375
Cash and cash equivalents at end of period	$ 229,203	$ 199,858