INCOME TAXES (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Assets:
Doubtful accounts	$ 2,344	$ 1,943
Inventory related items	30,074	24,417
Tax credits	1,040	3,137
Accrued vacation	3,264	2,713
Accrued bonus	7,842	7,555
Stock compensation	16,031	16,222
Deferred revenue	2,345	767
Net operating loss carryforwards	14,855	17,548
Federal & state tax credits	0	6,227
Others	1,435	1,952
Total deferred tax assets	79,230	82,481	$ 91,100
Less valuation allowance	3,604	4,887	$ 6,800
Deferred tax assets after valuation allowance	75,626	77,594
Liabilities:
Intangible and fixed assets	(216,779)	(225,328)
Others	(853)	(225)
Total deferred tax liabilities	(217,632)	(225,553)
Total net deferred tax liabilities	$ (142,006)	$ (147,959)