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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Nov. 30, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Operating Loss Carryforwards [Line Items]          
Income tax benefits related to research and development credits   $ 2,600 $ 4,500    
Net tax benefit   54,524 57,394 $ 29,770  
Estimated undistributed earnings from non-United States subsidiaries   43,700      
Valuation allowance   44,880 19,171    
Change in valuation allowance   17,500      
Unrecognized tax benefits   21,179 34,301 35,663 $ 55,325
Unrecognized tax benefits subject to indemnification   8,300      
Unrecognized Tax Benefits and associated interest and penalties, that Would Not Impact Effective Tax Rate   14,000      
Accrual for tax interest and penalties   9,300 17,300    
Interest and penalties recognized   700 200 600  
Income Tax Examination, Penalties and Interest Accrued $ 8,700        
Investor [Member]          
Operating Loss Carryforwards [Line Items]          
Unrecognized tax benefits that would have an impact on the effective tax rate   13,000 13,300    
Internal Revenue Service (IRS) [Member]          
Operating Loss Carryforwards [Line Items]          
Net operating loss carryforwards   176,600 181,400    
Operating loss carryforwards, subject to expiration   17,800      
State [Member]          
Operating Loss Carryforwards [Line Items]          
Net operating loss carryforwards   271,100 251,100    
Operating loss carryforwards, subject to expiration   30,100      
Foreign [Member]          
Operating Loss Carryforwards [Line Items]          
Net operating loss carryforwards   9,900 12,800    
FAFC [Member]          
Operating Loss Carryforwards [Line Items]          
Net tax benefit   (14,400)      
Reversal of unrecognized tax benefits $ (13,200)        
Income Tax Examination, Penalties and Interest Accrued   5,700      
Restatement Adjustment [Member]          
Operating Loss Carryforwards [Line Items]          
Net tax benefit   3,100 $ 4,400 $ (1,300)  
Restatement Adjustment [Member] | Domestic [Member]          
Operating Loss Carryforwards [Line Items]          
Reversal of unrecognized tax benefits   4,000      
Restatement Adjustment [Member] | Foreign [Member]          
Operating Loss Carryforwards [Line Items]          
Net tax benefit   15,300      
Change in valuation allowance   $ 12,200