INCOME TAXES PROVISION FOR TAX EXPENSE (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Tax Disclosure [Abstract]
Uncertain tax position interest and penalties, net of benefit	$ 2,240	$ 2,636	$ 3,482
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]
Domestic	128,201	161,969	57,763
Foreign	56,477	26,388	5,742
Income from continuing operations, before provision for income taxes	184,678	184,477	61,472
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments And Income from Discountinued Operations		188,357	63,505
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	16,285	48,974	12,059
State	6,002	10,397	3,163
Foreign	(2,697)	(5,687)	6,868
Current Income Tax Expense (Benefit)	19,590	53,684	22,090
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	22,455	1,207	4,965
State	2,710	(647)	968
Foreign	12,671	3,598	(1,204)
Deferred income taxes	37,836	4,919	4,830
Deferred Income Tax Expense Benefit Net of Discontinued Operations		4,158	4,729
Net provision for income taxes	57,426	56,756	26,225
Income Tax Expense Benefit Net of Discountinued Operations		57,842	26,819
The Company's effective tax rate (including taxes on income from discontinued operations) (as a percent)	31.00%	31.00%	42.00%
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Tax expense at statutory rate	64,637	65,925	22,227
State income taxes, net of federal benefit	5,788	6,966	2,067
Foreign rate differential	(10,229)	(6,752)	(4,213)
Non-deductible transaction costs	416	0	1,921
Uncertain tax position releases, net of benefit	(6,156)	(14,282)	0
Uncertain tax position interest and penalties, net of benefit	2,240	2,636	3,482
Other	$ 730	$ 3,349	$ 1,335