Annual report pursuant to Section 13 and 15(d)

Schedule of Effective Income Tax Rate Reconciliation (Details)

v3.3.1.900
Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Effective Income Tax Rate Reconciliaton [Line Items]                      
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate                 $ 166,502 $ 32,691 $ 225,573
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate                 35.00% 35.00% 34.00%
Income Tax Reconciliation, State and Local Income Taxes                 $ 114 $ 10 $ 4
Effective Income Tax Rate Reconciliation, State and Local Income Taxes                 0.00% 0.00% 0.00%
Income Tax Reconciliation, Nondeductible Expense                 $ 4,203 $ 1,636 $ 17,681
Effective Income Tax Rate Reconciliation, Nondeductible Expense                 1.00% 2.00% 3.00%
Income Tax Reconciliation, Deductions, Dividends                 $ (187,309) $ (108,075) $ (158,847)
Effective Income Tax Rate Reconciliation, Deductions, Dividends                 (39.00%) (116.00%) (24.00%)
Income Tax Expense (Benefit) $ 8,780 $ (7,656) $ (6,957) $ (10,657) $ (11,718) $ (4,858) $ (23,260) $ (33,902) $ (16,490) $ (73,738) $ 84,411
Effective Income Tax Rate Reconciliation, Percent                 (3.00%) (79.00%) 13.00%