Income Taxes - Income Tax Reconciliation (Details) - USD ($)
4 Months Ended 8 Months Ended 12 Months Ended
Dec. 31, 2015
Aug. 17, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Effective Income Tax Rate Reconciliation, Amount [Abstract]          
Provision for income taxes at statutory rate     $ (49,528,000)    
Tax at statutory rate on earnings not subject to federal income taxes     49,561,000    
Income for which no book expense was recognized     0    
Valuation allowances     0    
State tax (provision) benefit, net of federal     (960,000)    
Other     (11,000)    
Total income tax (provision) $ 66,000 $ (1,004,000) $ (938,000) $ 0 $ 0
Effective Income Tax Rate Reconciliation, Percent [Abstract]          
Provision for income taxes at statutory rate, percent     35.00%    
Tax at statutory rate on earnings not subject to federal income taxes, percent     (35.02%)    
Income for which no book expense was recognized, percent     0.00%    
Valuation allowances, percent     0.00%    
State tax (provision) benefit, net of federal, percent     0.68%    
Other, percent     0.01%    
Total income tax (provision), percent     0.67%