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Organization, Basis of Presentation, and Summary of Significant Accounting Policies Tender Offer (Details) - USD ($)
 5 Months Ended 7 Months Ended 12 Months Ended
May. 27, 2015
Apr. 15, 2015
Apr. 09, 2015
Jul. 15, 2014
Feb. 04, 2014
Jun. 30, 2014
Feb. 05, 2014
Jun. 30, 2015
Mar. 13, 2015
Nov. 01, 2013
Class of Stock [Line Items]                    
Common stock, par value (per share)               $ 0.01    
Debt issuance costs, net           $ 0   $ 1,158,000    
Issuance of common stock           $ 99,512,000 $ 47,766,000 133,362,000    
Proceeds from Issuance of Common Stock               $ 10.00    
Common Stock [Member]                    
Class of Stock [Line Items]                    
Stock Repurchase Program, Authorized Amount                 $ 70,000,000  
stock repurchase per share   $ 21.00                
Stock Repurchased During Period, Shares   3,333,333                
Issuance of common stock (shares)       5,520,000            
Conversion of previous classes of units into LLC units as part of the Recapitalization (units)     2,602,923              
Issuance of common stock       $ 18.50            
Unsolicited Tender Offer Costs   $ 1,523,000                
Class A Common Stock [Member]                    
Class of Stock [Line Items]                    
Common stock, par value (per share)           $ 0.01   $ 0.01   $ 0.01
Issuance of common stock (shares) 3,996,255       8,214,285          
Conversion of previous classes of units into LLC units as part of the Recapitalization (units) 2,967,267                  
Issuance of common stock $ 19.05                  
Underwriting discounts and commissions       5,106,000            
Minimum [Member]                    
Class of Stock [Line Items]                    
stock repurchase per share                 $ 21.00  
Maximum [Member]                    
Class of Stock [Line Items]                    
stock repurchase per share                 $ 23.50  
Stock Sold by Selling Stockholders [Member] | Class A Common Stock [Member]                    
Class of Stock [Line Items]                    
Proceeds from Issuance of Common Stock       $ 20,178,000            
Follow-On Offering [Member] | Common Stock [Member]                    
Class of Stock [Line Items]                    
Issuance of common stock (shares)       5,520,000            
Follow-On Offering [Member] | Class A Common Stock [Member]                    
Class of Stock [Line Items]                    
Issuance of common stock (shares)       1,148,107            
Proceeds from Issuance of Common Stock       $ 76,836,000            
Underwriting discounts and commissions       5,106,000            
Stock Sold by Company [Member] | Class A Common Stock [Member]                    
Class of Stock [Line Items]                    
Proceeds from Issuance of Common Stock       $ 76,836,000            
Over-Allotment Option [Member] | Class A Common Stock [Member]                    
Class of Stock [Line Items]                    
Issuance of common stock (shares) 521,250                  
Stock Sold by Selling Stockholders [Member] | Follow-On Offering [Member] | Class A Common Stock [Member]                    
Class of Stock [Line Items]                    
Issuance of common stock (shares)       1,148,107            
Proceeds from Issuance of Common Stock       $ 20,178,000            
Stock Sold by Selling Stockholders [Member] | Over-Allotment Option [Member] | Class A Common Stock [Member]                    
Class of Stock [Line Items]                    
Issuance of common stock (shares)       181,748 172,175          
Stock Sold by Company [Member] | Class A Common Stock [Member]                    
Class of Stock [Line Items]                    
Issuance of common stock (shares)       4,371,893            
Stock Sold by Company [Member] | Follow-On Offering [Member] | Class A Common Stock [Member]                    
Class of Stock [Line Items]                    
Issuance of common stock (shares)       4,371,893            
Proceeds from Issuance of Common Stock       $ 102,120,000            
Stock Sold by Company [Member] | Over-Allotment Option [Member] | Class A Common Stock [Member]                    
Class of Stock [Line Items]                    
Issuance of common stock (shares)       538,252 899,252