CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net earnings	$ 30,851	$ 16,583
Adjustments to reconcile net earnings to cash provided by operating activities:
Depreciation and amortization	11,318	10,248
Provision for (recovery of) losses on receivables	37	(177)
LIFO expense	2,682	437
Deferred income tax benefit	(997)	(778)
Excess tax benefit from share-based compensation	(2,458)	(584)
Share-based compensation expense	2,873	1,924
Pension expense	4,660	3,930
Postretirement obligation	257	199
Loss (gain) on disposition of property, plant and equipment	309	(270)
Loss from discontinued operations	0	16
Changes in:
Receivables, net	(23,819)	(8,618)
Income tax receivable	(394)	224
Inventories	(31,714)	(9,693)
Other current assets	(914)	(2,184)
Accounts payable	27,555	8,617
Accrued liabilities	7,509	7,191
Net cash provided by operating activities	27,755	27,065
Cash flows from investing activities:
Additions to property, plant and equipment	(48,898)	(32,024)
Proceeds from disposition of property, plant and equipment	206	387
(Increase) decrease in other assets	(198)	398
Acquisition of other companies	(1,500)	(1,842)
Net cash used in investing activities	(50,390)	(33,081)
Cash flows from financing activities:
Payments of notes payable	0	(672)
Dividends paid	(7,611)	(7,478)
Excess tax benefit from share-based compensation	2,458	584
Proceeds from exercise of stock options	4,294	4,412
Net cash provided by (used in) financing activities	(859)	(3,154)
Effect of translation on cash and cash equivalents	549	(613)
Net decrease in cash and cash equivalents	(22,945)	(9,783)
Cash and cash equivalents at beginning of period	88,592	100,858
Cash and cash equivalents at end of period	$ 65,647	$ 91,075