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INCOME TAXES (Tables)
12 Months Ended
Dec. 31, 2012
Income Tax Disclosure [Abstract]  
Income tax expense (benefit)
The income tax expense (benefit) for the year ended December 31, 2012 is as follows (in thousands):
 
 
Current
 
Deferred
 
Total
Foreign
$
302,352

 
$
(13,792
)
 
$
288,560

Federal
3,681

 
37,956

 
41,637

State
12,203

 
(4,568
)
 
7,635

Total
$
318,236

 
$
19,596

 
$
337,832

 
The income tax expense (benefit) for the year ended December 31, 2011 is as follows (in thousands):
 
 
Current
 
Deferred
 
Total
Foreign
$
251,542

 
$
(7,411
)
 
$
244,131

Federal
2,699

 
53,547

 
56,246

State
9,675

 
(1,389
)
 
8,286

Total
$
263,916

 
$
44,747

 
$
308,663

 
The income tax expense (benefit) for the year ended December 31, 2010 is as follows (in thousands):
 
 
Current
 
Deferred
 
Total
Foreign
$
174,977

 
$
(9,309
)
 
$
165,668

Federal
4,510

 
37,481

 
41,991

State
1,114

 
9,368

 
10,482

Total
$
180,601

 
$
37,540

 
$
218,141

Tax effects of temporary differences that give rise to significant portions of deterred tax assets and liabilities
The tax effects of temporary differences that give rise to significant portions of deferred tax assets and liabilities at December 31, 2012 and 2011 are as follows (in thousands):
 
 
2012
 
2011
Deferred tax assets/(liabilities):
 

 
 

Net operating loss carryforward — U.S.
$
365,268

 
$
788,490

IRC 382 Disallowance
(121,252
)
 
(498,249
)
 
244,016

 
290,241

Net operating loss carryforward — Foreign
19,638

 
20,437

Fixed assets
38

 
927

Investments
5,139

 
5,189

Accrued expenses
20,488

 
13,275

Stock-based compensation and other stock based payments
12,326

 
10,727

Other
15,881

 
8,884

Subtotal
317,526

 
349,680

 
 
 
 
Discount on convertible notes
(68,594
)
 
(31,032
)
Intangible assets and other
(47,053
)
 
(48,753
)
Less valuation allowance on deferred tax assets
(175,594
)
 
(171,755
)
Net deferred tax assets(1)
$
26,285

 
$
98,140

 
(1)   Includes current deferred tax liabilities of $0.8 million and $2.7 million as of December 31, 2012 and 2011, respectively, which are reported in "Accrued expenses and other current liabilities" on the Consolidated Balance Sheets.
Schedule of effective income tax rate reconciliation
The effective income tax rate of the Company is different from the amount computed using the expected U.S. statutory federal rate of 35% as a result of the following items (in thousands):
 
 
2012
 
2011
 
2010
Income tax expense at federal statutory rate
$
616,654

 
$
478,728

 
$
261,199

Adjustment due to:
 

 
 

 
 

State taxes
5,296

 
5,168

 
6,762

Foreign rate differential
(175,932
)
 
(125,824
)
 
(58,927
)
Innovation Box Tax benefit
(118,916
)
 
(48,101
)
 
(11,645
)
Other
10,730

 
(1,308
)
 
20,752

Income tax expense
$
337,832

 
$
308,663

 
$
218,141

Reconciliation of unrecognized tax benefits
The following is a reconciliation of the total amount of unrecognized tax benefits (in thousands):
 
 
2012
 
2011
 
2010
Unrecognized tax benefit — January 1
$
3,192

 
$
13,386

 
$
741

Gross increases — tax positions in current period
4,423

 
1,455

 
12,645

Gross increases — tax positions in prior period
343

 
876

 

Gross decreases — tax positions in prior period
(615
)
 
(12,525
)
 

Unrecognized tax benefit — December 31
$
7,343

 
$
3,192

 
$
13,386