INCOME TAXES Deferred Tax Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Deferred Tax Asset (Liability) [Line Items]
Tax credit and net operating loss carryforwards		$ 369,847	$ 318,471
Allowances for bad debts		431	372
Revenues		35,856	54,475
Costs and expenses		26,537	34,116
Inventories		9,118	7,576
Acquired intangible assets		6,112	9,799
Gross deferred tax assets		447,901	424,809
Valuation allowance		(432,631)	(406,123)
Deferred tax assets after valuation allowance		15,270	18,686
Costs and expenses		(6,457)	(5,654)
Acquired intangible assets		(3,669)	(8,554)
Basis differerence convertible notes		(4,812)	(5,910)
Gross deferred tax liabilities		(14,938)	(20,118)
Net deferred tax assets (liabilities)		332	(1,432)
Long-term deferred tax assets, net (in other assets)		1,245	2,011
Long-term deferred tax liabilities, net		(913)	(3,443)
Net deferred tax assets (liabilities)		332	(1,432)
Deferred tax assets related to exercise of employee stock options excluded from deferred tax schedule			$ 33,700
US Federal and State [Member]
Deferred Tax Asset (Liability) [Line Items]
Tax credit carryforwards		51,200
Net operating loss carryforwards		783,900
Foreign [Member]
Deferred Tax Asset (Liability) [Line Items]
Tax credit carryforwards		4,300
Net operating loss carryforwards		77,200
Valuation allowance, tax credits		4,300
Valuation allowance, net operating losses		$ 66,000
Adjustments for New Accounting Pronouncement [Member]
Deferred Tax Asset (Liability) [Line Items]
Deferred tax asset reclassification adjustment	$ 300