Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020
Current assets
Cash and cash equivalents	$ 305,796	$ 274,639	$ 315,448
Trade accounts receivable, net	249,931	165,128	233,867
Inventories	310,254	283,742	265,365
Other current assets	35,722	29,630	20,222
Total current assets	901,703	753,139	834,902
Property, plant and equipment, net	255,353	255,184	247,119
Operating lease right-of-use assets	43,374	45,792	36,930
Goodwill	134,121	135,844	132,335
Intangible assets, net	23,749	26,800	22,139
Other noncurrent assets	15,674	15,810	11,078
Total Assets	1,373,974	1,232,569	1,284,503
Current liabilities
Trade accounts payable	60,268	48,271	49,149
Accrued liabilities and other current liabilities	172,186	145,790	144,265
Total current liabilities	232,454	194,061	193,414
Operating lease liabilities	34,087	37,199	28,893
Long term debt, net of current portion	0	0	150,000
Deferred income tax and other long-term liabilities	20,528	20,366	17,984
Total liabilities	287,069	251,626	390,291
Commitments and contingencies (see Note 13)
Stockholders’ equity
Common stock, at par value	435	433	444
Additional paid-in capital	289,261	284,007	277,625
Retained earnings	822,497	720,441	716,038
Treasury stock	(13,510)	(13,510)	(72,058)
Accumulated other comprehensive loss	(11,778)	(10,428)	(27,837)
Total stockholders’ equity	1,086,905	980,943	894,212
Total liabilities and stockholders’ equity	$ 1,373,974	$ 1,232,569	$ 1,284,503