Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 251,208	$ 175,553
Trade accounts receivable, net	90,017	82,812
Inventories	197,728	204,124
Deferred income taxes	12,699	11,473
Assets held for sale		593
Other current assets	16,454	23,499
Total current assets	568,106	498,054
Property, plant and equipment, net	209,533	213,452
Goodwill	129,218	121,981
Intangible assets	41,773	50,598
Other noncurrent assets	4,983	6,237
Total assets	953,613	890,322
Current liabilities
Line of credit and notes payable	103	178
Trade accounts payable	34,933	37,117
Accrued liabilities	51,745	44,923
Accrued profit sharing trust contributions	5,784	5,191
Accrued cash profit sharing and commissions	6,049	3,414
Accrued workers' compensation	4,591	4,692
Total current liabilities	103,205	95,515
Long-term liabilities	9,129	5,239
Total liabilities	112,334	100,754
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, 48,712 and 48,422 at December 31, 2013 and 2012, respectively	486	483
Additional paid-in capital	207,418	184,677
Retained earnings	615,289	592,309
Accumulated other comprehensive income	18,086	12,099
Total stockholders' equity	841,279	789,568
Total liabilities and stockholders' equity	$ 953,613	$ 890,322