INCOME TAXES INCOME TAXES (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2012 Months	Dec. 31, 2012	Dec. 31, 2011
Income Tax Contingency [Line Items]
U.S. statutory federal rate	35.00%
Effective income tax rate on qualifying innovative activities at Innovation Box Tax rate	5.00%
Dutch statutory rate, 2011	25.00%
Period of time, eligibility for Innovation Box Tax (in months)	6
Impact of the Innovation Box Tax			4.00%
Current expectation of the Innovation Box Tax to reduce income tax rate, minimum		4.00%
Current expectation of the Innovation Box Tax to reduce income tax rate, maximum		6.00%
Deferred tax asset, net of valuation allowance recorded	$ 96,800,000		$ 147,800,000
Deferred tax liability	45,720,000		46,990,000
U.S. Federal Income Tax [Member]
Income Tax Contingency [Line Items]
Maximum change in ownership percentage allowed before statutory limitations imposed on the availability of net operating losses	50.00%
Estimated aggregate limitation of cumulative net operating losses available net of limit imposed by IRC Section 382			1,200,000,000
Foreign [Member]
Income Tax Contingency [Line Items]
Deferred tax liability	$ 45,700,000		$ 47,000,000