INCOME TAXES (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets:
Doubtful accounts	$ 1,811	$ 2,344
Inventory related items	29,266	30,074
Tax credits	6,015	1,040
Accrued vacation	2,556	3,264
Accrued bonus	997	7,842
Stock compensation	10,426	16,031
Deferred revenue	2,395	2,345
Net operating loss carryforwards	37,492	15,058
Unrealized foreign exchange loss	1,177	96
Charitable contributions carryforward	1,287	5
Others	3,077	128
Total deferred tax assets	96,499	78,227	$ 82,500
Less valuation allowance	(7,961)	(3,604)	$ (4,900)
Deferred tax assets after valuation allowance	88,538	74,623
Liabilities:
Intangible and fixed assets	(146,327)	(215,438)
Others	(1,091)	(1,191)
Total deferred tax liabilities	(147,418)	(216,629)
Total net deferred tax liabilities	$ (58,880)	$ (142,006)