CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 58,519	$ 56,916
Trade receivables - net of allowance for credit losses - 2021 - $5,953 and 2020 - $5,313	150,314	146,641
Other receivables	8,719	7,774
Inventories	200,308	198,019
Prepaid expenses and other current assets	13,617	13,120
Prepaid income taxes	3,680	3,688
Income tax refund receivables	3,331	3,549
Total current assets	438,488	429,707
PROPERTY AND EQUIPMENT:
Land and land improvements	28,087	28,400
Buildings	187,774	188,878
Manufacturing equipment	270,754	268,894
Furniture and fixtures	61,422	61,586
Leasehold improvements	48,319	48,800
Construction-in-progress	47,735	46,889
Total property and equipment	644,091	643,447
Less accumulated depreciation	(265,914)	(260,719)
Property and equipment - net	378,177	382,728
OTHER ASSETS:
Goodwill	362,500	363,533
Deferred income tax assets	4,529	4,597
Right-of-use operating lease assets	74,714	78,240
Other assets	37,286	37,676
Total other assets	835,054	851,961
TOTAL ASSETS	1,651,719	1,664,396
CURRENT LIABILITIES:
Trade payables	52,986	49,837
Accrued expenses	132,173	111,944
Current portion of long-term debt	7,500	7,500
Short-term operating lease liabilities	12,246	12,903
Income taxes payable	2,773	2,820
Total current liabilities	207,678	185,004
Long-term debt	312,875	343,722
Deferred income tax liabilities	33,252	33,312
Long-term income taxes payable	347	347
Liabilities related to unrecognized tax benefits	1,016	1,016
Deferred compensation payable	16,227	16,808
Deferred credits	1,896	1,923
Long-term operating lease liabilities	67,980	70,941
Other long-term obligations	33,756	52,748
Total liabilities	675,027	705,821
Commitments and contingencies
STOCKHOLDERS' EQUITY:
Preferred stock - 5,000 shares authorized as of March 31, 2021 and December 31, 2020; no shares issued	0	0
Common stock, no par value; shares authorized - 2021 and 2020 - 100,000; issued and outstanding as of March 31, 2021 - 55,933 and December 31, 2020 - 55,623	615,113	606,224
Retained earnings	368,761	357,803
Accumulated other comprehensive loss	(7,182)	(5,452)
Total stockholders' equity	976,692	958,575
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,651,719	1,664,396
Developed technology
OTHER ASSETS:
Intangible assets	307,713	318,059
Other
OTHER ASSETS:
Intangible assets	$ 48,312	$ 49,856