Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Current assets
Cash and cash equivalents	$ 248,612	$ 260,307	$ 221,196
Trade accounts receivable, net	140,945	92,015	137,803
Inventories	212,293	216,545	219,036
Deferred income taxes	13,556	14,662	13,625
Other current assets	13,632	20,789	12,503
Total current assets	629,038	604,318	604,163
Property, plant and equipment, net	206,837	207,027	206,563
Goodwill	124,827	123,881	129,231
Intangible assets, net	30,743	32,587	38,056
Other noncurrent assets	4,412	5,252	5,321
Total assets	995,857	973,065	983,334
Current liabilities
Line of credit and notes payable	0	18	62
Trade accounts payable	26,915	22,860	27,119
Accrued liabilities	56,305	56,078	56,490
Income taxes payable	3,198	0	1,734
Accrued profit sharing trust contributions	3,173	5,384	3,416
Accrued cash profit sharing and commissions	13,695	6,039	12,205
Accrued workers’ compensation	4,458	4,101	4,429
Total current liabilities	107,744	94,480	105,455
Deferred income tax and other long-term liabilities	16,773	15,120	12,603
Total liabilities	$ 124,517	$ 109,600	$ 118,058
Commitments and contingencies (Note 7)
Stockholders’ equity
Common stock, at par value	$ 493	$ 489	$ 489
Additional paid-in capital	229,279	220,982	213,037
Retained earnings	665,914	649,174	634,858
Treasury stock	(8,464)	0	0
Accumulated other comprehensive income (loss)	(15,882)	(7,180)	16,892
Total stockholders’ equity	871,340	863,465	865,276
Total liabilities and stockholders’ equity	$ 995,857	$ 973,065	$ 983,334