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Schedule II - Valuation and Qualifying Accounts (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period $ 94,455 $ 136,576 $ 282,778
Charged to expense - additions 33,238 2,124 4,552
Release of valuation allowance - deductions (2,639) (44,245) (150,754)
Charged to expense - deductions 0 0 0
Balance at end of period 125,054 94,455 136,576
State Operating Loss Carry-Forwards      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period 47,964 61,560 60,488
Charged to expense - additions 33,238 0 0
Release of valuation allowance - deductions 0 (13,596) 1,072
Charged to expense - deductions 0 0 0
Balance at end of period 81,202 47,964 61,560
Deferred Deductible Temporary Differences      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period 0 9,088 10,590
Charged to expense - additions   0 0
Release of valuation allowance - deductions   (9,088) (1,502)
Charged to expense - deductions   0 0
Balance at end of period   0 9,088
Charitable Contributions      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period 3,297 3,156 5,052
Charged to expense - additions 0 141 0
Release of valuation allowance - deductions (2,639) 0 (1,896)
Charged to expense - deductions 0 0 0
Balance at end of period 658 3,297 3,156
162(m) Officers Compensation      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period 0 5,957 0
Charged to expense - additions   0 0
Release of valuation allowance - deductions   (5,957) 5,957
Charged to expense - deductions   0  
Balance at end of period   0 5,957
AMT Credit      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period 0 12,413 166,798
Charged to expense - additions   1,983 0
Release of valuation allowance - deductions   (14,396) (154,385)
Charged to expense - deductions   0 0
Balance at end of period   0 12,413
Foreign Tax Credits      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period 43,194 44,402 39,850
Charged to expense - additions 0 0 4,552
Release of valuation allowance - deductions 0 (1,208) 0
Charged to expense - deductions 0 0 0
Balance at end of period $ 43,194 $ 43,194 $ 44,402