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Summary of Significant Accounting Policies - Narrative (Details)
1 Months Ended 9 Months Ended
Jul. 22, 2015
Aug. 31, 2015
$ / shares
shares
Sep. 30, 2016
state
business
Sep. 29, 2015
Class of Stock [Line Items]        
Number of operating segments | business     2  
Number of states in which entity operates | state     50  
Stock split conversion ratio 10.2      
Ownership percentage       50.00%
IPO        
Class of Stock [Line Items]        
Stock issued during period (shares)   3,300,000    
Price per share (in dollars per share) | $ / shares   $ 10.50    
IPO | Chief Executive Officer        
Class of Stock [Line Items]        
Stock issued during period (shares)   100,000