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Stock Compensation (Details) - $ / shares
1 Months Ended 2 Months Ended 9 Months Ended
Dec. 31, 2016
Dec. 31, 2016
Jun. 30, 2017
Oct. 01, 2016
Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share price (usd per share)       $ 11.06  
Common Stock Class A Non-voting          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares authorized (shares)         3,485,649
Long-Term Incentive Plan 2010 | Common Stock Class A Non-voting          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Increase of shares authorized for grant (shares) 500,000        
Long-Term Incentive Plan 2010 | Restricted stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options granted (in dollars per share)   $ 9.60      
Employee | Long-Term Incentive Plan 2010 | Restricted stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options granted in period (shares)   919,898      
Non-employee Directors | Restricted stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     2 years    
Non-employee Directors | Restricted stock | Year One          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options, vesting period     50.00%    
Non-employee Directors | Restricted stock | Year Two          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options, vesting period     50.00%    
Non-employee Directors | Long-Term Incentive Plan 2010 | Restricted stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options granted in period (shares)   72,500