Financial Statements Schedules Schedule V. Valuation and Qualifying Accounts - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Valuation Allowance [Line Items]      
Valuation Allowances and Reserves, Balance $ 283,636 $ 287,151 $ 281,613
Valuation Allowances and Reserves, Charged to Cost and Expense 1,033 5,686  
Valuation Allowances and Reserves, Adjustments $ (4,548) $ (148)