Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 519,485	$ 396,097	[1]
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	18,009	14,687	[1]
TOTAL CASH, CASH EQUIVALENTS AND INVESTMENT SECURITIES	537,494	410,784	[1]
Accounts receivable, net of allowance for doubtful accounts of $14,590 at June 30 2021 and $21,490 at December 31, 2020	116,043	124,093	[1]
Inventories	291,601	314,928	[1]
Prepaid income taxes	31,381	29,480	[1]
Prepaid expenses and other current assets	34,718	41,492	[1]
TOTAL CURRENT ASSETS	1,011,237	920,777	[1]
PROPERTY AND EQUIPMENT, net	458,041	466,628	[1]
Operating Lease, Right-of-Use Asset	40,979	46,571	[1]
Debt Securities, Available-for-sale, Noncurrent	7,172	12,974
GOODWILL	32,760	33,001	[1]
INTANGIBLE ASSETS, net	192,778	197,231	[1]
Deferred Income Tax Assets	35,585	31,034
OTHER ASSETS	60,799	55,475	[1]
TOTAL ASSETS	1,839,351	1,763,691	[1]
CURRENT LIABILITIES:
Accounts payable	62,008	71,864	[1]
Accrued liabilities	94,133	97,021	[1]
Income tax liability	2,636	303	[1]
Contingent earn-out liability	26,300	26,300
TOTAL CURRENT LIABILITIES	185,077	195,488	[1]
Contingent Earn-Out Liability, Noncurrent	3,100	0	[1]
Other long-term liabilities	40,853	47,835
DEFERRED INCOME TAXES	1,663	1,663	[1]
INCOME TAX LIABILITY	18,686	16,440	[1]
COMMITMENTS AND CONTINGENCIES	0	0	[1]
STOCKHOLDERS' EQUITY:
Convertible preferred stock, $1.00 par value Authorized-500 shares; Issued and outstanding - none	0	0	[1]
Common stock, $0.10 par value - Authorized-80,000 shares; Issued 21,219 shares at June 30, 2021 and 21,058 shares at December 31, 2020 and outstanding 21,208 shares at June 30, 2021 and 21,058 shares at December 31, 2020	2,124	2,106	[1]
Additional paid-in capital	711,152	693,068	[1]
Treasury Stock, at cost (26,785 and 209 shares, respectively)	(48)	(39)	[1]
Retained earnings	891,862	808,652	[1]
Accumulated other comprehensive loss	(15,118)	(1,522)	[1]
TOTAL STOCKHOLDERS' EQUITY	1,589,972	1,502,265	[1]
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,839,351	$ 1,763,691	[1]

[1] December 31, 2020 balances were derived from audited consolidated financial statements.