Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Current assets
Cash and cash equivalents	$ 294,180	$ 274,639	$ 311,465
Trade accounts receivable, net	236,535	165,128	226,447
Inventories	385,512	283,742	260,054
Other current assets	33,427	29,630	22,439
Total current assets	949,654	753,139	820,405
Noncurrent assets
Property, plant and equipment, net	255,547	255,184	246,472
Operating lease right-of-use assets	41,513	45,792	41,453
Goodwill	133,495	135,844	133,734
Intangible assets, net	22,077	26,800	20,964
Other noncurrent assets	19,783	15,810	14,837
Total assets	1,422,069	1,232,569	1,277,865
Current liabilities
Trade accounts payable	62,405	48,271	42,271
Accrued liabilities and other current liabilities	183,072	145,790	148,890
Total current liabilities	245,477	194,061	191,161
Liabilities, Noncurrent
Operating lease liabilities	33,063	37,199	33,354
Long term debt, net of current portion	0	0	75,000
Deferred income tax and other long-term liabilities	20,526	20,366	17,550
Total liabilities	299,066	251,626	317,065
Commitments and contingencies (see Note 13)
Stockholders’ equity
Common stock, at par value	435	433	444
Additional paid-in capital	291,733	284,007	281,134
Retained earnings	885,472	720,441	772,851
Treasury stock	(37,635)	(13,510)	(72,058)
Accumulated other comprehensive loss	(17,002)	(10,428)	(21,571)
Total stockholders’ equity	1,123,003	980,943	960,800
Total liabilities and stockholders’ equity	$ 1,422,069	$ 1,232,569	$ 1,277,865