Annual report pursuant to Section 13 and 15(d)

Income Taxes Schedule of Effective Income Tax Rate Reconciliation (Details)

v3.6.0.2
Income Taxes Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Effective Income Tax Rate Reconciliaton [Line Items]                      
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount                 $ 127,953 $ 166,502 $ 32,691
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent                 35.00% 35.00% 35.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount                 $ 108 $ 114 $ 10
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent                 0.00% 0.00% 0.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount                 $ 392 $ 4,203 $ 1,636
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent                 0.00% 1.00% 2.00%
Effective Income Tax Rate Reconciliation, Deduction, Dividends, Amount                 $ (116,150) $ (187,309) $ (108,075)
Effective Income Tax Rate Reconciliation, Deduction, Dividend, Percent                 (32.00%) (39.00%) (116.00%)
Provision for (benefit from) income taxes $ 38,441 $ (16,827) $ (14,762) $ 5,451 $ 8,780 $ (7,656) $ (6,957) $ (10,657) $ 12,303 $ (16,490) $ (73,738)
Effective Income Tax Rate Reconciliation, Percent                 3.00% (3.00%) (79.00%)