XML 106 R90.htm IDEA: XBRL DOCUMENT v3.10.0.1
Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Schedule Of Income Taxes [Line Items]      
Effective income tax rate 21.00% 35.00% 35.00%
Net foreign operating loss carry-forward $ 85,000    
Valuation allowance recognized 50,600 $ 38,800  
Net change in valuation allowance (11,800) 31,400  
Deferred Tax Assets, Operating Loss Carryforwards, Domestic 5,600    
Net federal operating tax loss carry-forward 863,100,000 857,500  
Net state operating tax loss carry-forward 412,200    
One-time income inclusion of unremitted earnings as a result of the Tax Act   $ 52,400  
Deferred foreign withholding taxes 6,225    
Transition tax $ 49,200    
Transition taxable income inclusion period 8 years    
Transition tax inclusion $ 41,300    
Transition tax inclusion included in taxable income, period 6 years    
Reduction to deferred tax asset and offsetting valuation allowance $ 12,300    
Deferred tax asset offset by valuation allowance 6,000    
Real Estate Investment Trust [Member]      
Schedule Of Income Taxes [Line Items]      
Net federal operating tax loss carry-forward $ 755,400,000    
Minimum [Member]      
Schedule Of Income Taxes [Line Items]      
Operating loss carry-forward, expiration year 2024    
Foreign and state operating tax loss carry forwards expiration date 2020    
Maximum [Member]      
Schedule Of Income Taxes [Line Items]      
Operating loss carry-forward, expiration year 2037