Condensed Consolidated Statement of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities
Net Income	$ 45,370	$ 44,171
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	9,154	9,219
Amortization	2,754	2,621
Equity in undistributed earnings of associated companies, net of dividends	(2,306)	(2,525)
Deferred compensation and other, net	1,672	(50)
Stock-based compensation	3,959	3,133
Gain on Disposal of Property, Plant and Equipment	(125)	193
Insurance settlement realized	(1,214)	(731)
Pension and other postretirement benefits	178	(561)
(Decrease) increase in cash from changes in current assets and current liabilities, net of acquisitions:
Accounts receivable	(23,061)	(13,222)
Inventories	(9,143)	(4,569)
Prepaid expenses and other current assets	1,332	1,017
Accounts payable and accrued liabilities	9,470	13,256
Net cash provided by operating activities	38,040	51,952
Cash flows from investing activities
Investments in property, plant and equipment	(8,376)	(7,330)
Payments related to acquisitions, net of cash acquired	(51,947)	(2,478)
Proceeds from disposition of assets	178	391
Interest earned on insurance settlements	34	40
Change in restricted cash, net	1,180	691
Net cash used in investing activities	(58,931)	(8,686)
Cash flows from financing activities
Proceeds from long-term debt	45,000	0
Repayment of long-term debt	(1,106)	(12,289)
Dividends paid	(10,580)	(9,721)
Stock options exercised, other	(194)	(510)
Excess Tax Benefit Related to Stock Option Exercises, Cash Flow	430	815
Purchase of a noncontrolling interest in an affiliate	(7,422)	0
Payment of acquisition-related earnout liability	(4,709)	0
Distributions to noncontrolling affiliate shareholders	(1,806)	(30)
Net cash provided by (used in) financing activities	19,613	(21,735)
Effect of exchange rate changes on cash	(2,993)	(133)
Net (Decrease) Increase in Cash and Cash Equivalents	(4,271)	21,398
Cash and cash equivalents at beginning of period	68,492	32,547
Cash and cash equivalents at end of period	64,221	53,945
Other Noncash Investing And Financing Items [Abstract]
Accrued Property, Plant and Equipment Purchases	$ 0	$ 1,178