Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
CURRENT ASSETS:
Cash and cash equivalents	$ 254,536	$ 290,072	[1]
Short-term investment securities	14,180	10,061	[1]
TOTAL CASH, CASH EQUIVALENTS AND INVESTMENT SECURITIES	268,716	300,133	[1]
Accounts receivable, net of allowance for doubtful accounts of $3,839 at March 31, 2018 and $3,311 at December 31, 2017	123,477	112,696	[1]
Inventories	295,548	288,657	[1]
Prepaid income taxes	16,111	10,594	[1]
Prepaid expenses and other current assets	32,406	41,286	[1]
Due from Related Parties, Current	132,272	98,807	[1]
Assets held-for-sale	0	12,489	[1]
TOTAL CURRENT ASSETS	868,530	864,662	[1]
PROPERTY AND EQUIPMENT, net	407,582	398,684	[1]
LONG-TERM INVESTMENT SECURITIES	9,896	14,579	[1]
GOODWILL	12,314	12,357	[1]
INTANGIBLE ASSETS, net	136,645	143,753	[1]
DEFERRED INCOME TAXES	20,073	24,775	[1]
OTHER ASSETS	37,702	38,141	[1]
TOTAL ASSETS	1,492,742	1,496,951	[1]
CURRENT LIABILITIES:
Accounts payable	82,195	78,228	[1]
Accrued liabilities	116,448	132,064	[1]
TOTAL CURRENT LIABILITIES	198,643	210,292	[1]
CONTINGENT EARN-OUT LIABILITY	23,000	27,000	[1]
OTHER LONG-TERM LIABILITIES	35,074	55,326	[1]
DEFERRED INCOME TAXES	1,482	1,487	[1]
INCOME TAX LIABILITY	4,592	4,592	[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 20,317 shares at March 31, 2018 and 20,210 shares at December 31, 2017; Outstanding 20,304 shares at March 31, 2018 and 20,210 shares at December 31, 2017	2,032	2,021	[1]
Additional paid-in capital	632,012	625,568	[1]
Treasury Stock, at cost	(3,176)	0	[1]
Retained earnings	596,829	585,624	[1]
Accumulated other comprehensive loss	2,254	(14,959)	[1]
TOTAL STOCKHOLDERS' EQUITY	1,229,951	1,198,254	[1]
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,492,742	1,496,951	[1]
Allowance for doubtful accounts	$ 3,839	$ 3,311
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	20,317,000	20,210,000
Common stock, shares outstanding	20,304,000	20,210,000
Treasury Stock, Shares	(13,242)	0

[1] December 31, 2017 balances were derived from audited consolidated financial statements.