Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating Activities:
Net income	$ 22,207	$ 19,072
Adjustments to reconcile net income to net cash from operating activites:
Depreciation and amortization	13,063	14,034
Amortization of convertible debt discount	537	610
Gain on disposition of property, plant and equipment	(97)	(104)
Stock compensation expense	2,100	2,102
Withholding taxes paid on stock issuances	(683)	(624)
Loss on sale of businesses	767	0
Changes in assets and liabilities:
Accounts receivable	(1,512)	(25,739)
Inventories	1,091	1,561
Prepaid expenses and other current assets	(2,272)	(413)
Accounts payable	(672)	120
Accrued liabilities	(29,379)	(12,518)
Deferred income taxes	4,869	5,269
Long-term retirement benefits	(3,725)	(6,636)
Other	25	(1,385)
Net cash provided (used) by operating activities	6,319	(4,651)
Investing activities:
Proceeds from disposition of property, plant, and equipment	135	114
Payments related to the sale of businesses	363	0
Capital expenditures	(7,281)	(12,488)
Other	(1,418)	(3,211)
Net cash used by investing activities	(8,927)	(15,585)
Financing activities:
Net change in other borrowings	(6,688)	(526)
Payments on long-term debt	(13,135)	(60,489)
Proceeds from the issuance of long-term debt	49,000	80,300
Proceeds from the issuance of common stock	3,324	7,759
Common stock repurchases	(11,141)	0
Dividends paid	(5,459)	(4,351)
Excess tax benefit on stock awards	1,227	492
Other	(65)	(83)
Net cash provided by financing activities	17,063	23,102
Effect of exchange rate changes on cash flows	529	511
Increase in cash and cash equivalents	14,984	3,377
Cash and cash equivalents at beginning of period	62,505	13,450
Cash and cash equivalents at end of period	$ 77,489	$ 16,827