Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
CURRENT ASSETS:
Cash and cash equivalents	$ 419,557	$ 268,670	[1]
Short-term investment securities	20,115	23,967	[1]
TOTAL CASH, CASH EQUIVALENTS AND INVESTMENT SECURITIES	439,672	292,637	[1]
Accounts receivable, net of allowance for doubtful accounts of $19,856 at March 31, 2020 and $20,219 at December 31, 2019	198,158	202,219	[1]
Inventories	311,604	337,640	[1]
Prepaid income taxes	18,140	15,720	[1]
Prepaid expenses and other current assets	34,601	33,981	[1]
TOTAL CURRENT ASSETS	1,002,175	882,197	[1]
PROPERTY AND EQUIPMENT, net	455,624	456,085	[1]
Operating Lease, Right-of-Use Asset	50,430	34,465	[1]
GOODWILL	30,767	31,245	[1]
INTANGIBLE ASSETS, net	206,837	211,408	[1]
Deferred Income Tax Assets, Net	21,904	27,998
OTHER ASSETS	49,242	48,984	[1]
TOTAL ASSETS	1,816,979	1,692,382	[1]
CURRENT LIABILITIES:
Accounts payable	86,348	128,629	[1]
Accrued liabilities	120,009	117,776	[1]
Accrued Income Taxes, Current	944	2,063	[1]
Long-term Debt, Current Maturities	150,000	0
TOTAL CURRENT LIABILITIES	357,301	248,468	[1]
CONTINGENT EARN-OUT LIABILITY	17,300	17,300	[1]
Other Liabilities, Noncurrent	50,041	32,820
DEFERRED INCOME TAXES	1,985	2,091	[1]
INCOME TAX LIABILITY	14,459	14,459	[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 20,668 shares at March 31, 2019 and 20,492 shares at December 31, 2018 and outstanding 20,612 shares at March 31, 2019 and 20,491 shares at December 31, 2018	2,083	2,074	[1]
Additional paid-in capital	665,679	668,947	[1]
Treasury Stock, at cost	(1,573)	(157)	[1]
Retained earnings	738,616	721,782	[1]
Accumulated other comprehensive loss	(28,912)	(15,402)	[1]
TOTAL STOCKHOLDERS' EQUITY	1,375,893	1,377,244	[1]
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,816,979	1,692,382	[1]
Allowance for doubtful accounts	$ 19,856	$ 20,219
Convertible preferred stock, par value	$ 1.00	$ 1.00
Convertible preferred stock, authorized shares	500,000	500,000
Convertible preferred stock, issued shares	0	0
Convertible preferred stock, outstanding shares	0	0
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	80,000,000	80,000,000
Common stock, shares issued	20,833,000	20,743,000
Common stock, shares outstanding	20,825,000	20,742,000
Treasury Stock, Shares	(8,424)	(850)

[1] December 31, 2019 balances were derived from audited consolidated financial statements.