Summary of Significant Accounting Policies (Details)
$ in Thousands
12 Months Ended
Feb. 19, 2015
USD ($)
Dec. 31, 2015
USD ($)
integer
Dec. 31, 2014
USD ($)
Feb. 12, 2014
USD ($)
Feb. 11, 2014
USD ($)
Retained Earnings Adjustments [Line Items]          
Accumulated deficit   $ 100,678 $ 54,219    
Net assets       $ 75,600  
Cash       $ 80,000  
Number of reportable segments | integer   1      
Number of days carved out of financial statements of former parent that are presented with the reporting entity     42 days    
Deferred tax assets before valuation allowance $ 17,900 $ 40,463      
Underwriting discounts and commissions and offering expenses $ 8,100 $ 8,085      
Predecessor          
Retained Earnings Adjustments [Line Items]          
Accumulated deficit         $ (182,000)