Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current assets
Cash and cash equivalents	$ 213,817	$ 335,049
Trade accounts receivable, net	76,420	68,256
Inventories	180,129	152,297
Deferred income taxes	11,774	10,189
Assets held for sale	6,793	10,787
Other current assets	13,131	14,678
Total current assets	502,064	591,256
Property, plant and equipment, net	195,716	177,072
Goodwill	99,849	70,069
Equity method investment		213
Intangible assets	27,856	23,466
Deferred income taxes	2,851	2,579
Other noncurrent assets	7,751	10,054
Total assets	836,087	874,709
Current liabilities
Trade accounts payable	22,034	35,164
Accrued liabilities	36,156	31,372
Accrued profit sharing trust contributions	4,477	5,591
Accrued cash profit sharing and commissions	3,446	2,805
Accrued workers' compensation	5,474	4,684
Total current liabilities	71,587	79,616
Long-term liabilities	6,137	7,300
Total liabilities	77,724	86,916
Commitments and contingencies (Note 9)
Stockholders' equity
Preferred stock, par value $0.01; authorized shares, 5,000; issued and outstanding shares, none
Common stock, par value $0.01; authorized shares, 160,000; issued and outstanding shares, 48,163 and 50,096 at December 31, 2011 and 2010, respectively	481	500
Additional paid-in capital	170,483	165,425
Retained earnings	580,616	607,241
Accumulated other comprehensive income	6,783	14,627
Total stockholders' equity	758,363	787,793
Total liabilities and stockholders' equity	$ 836,087	$ 874,709