XML 65 R53.htm IDEA: XBRL DOCUMENT v3.8.0.1
Equity-Based Compensation (Equity Based Awards - Settled in Stock) (Details) - Performance stock units - shares
1 Months Ended 9 Months Ended
Apr. 30, 2017
Feb. 28, 2017
Sep. 30, 2017
Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Units awarded (in shares)     108,748 0
Performance period     1 year  
2015 Incentive Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Units awarded that will convert to shares (in shares) 5,266 78,482    
Units awarded (in shares) 5,000 20,000    
Performance period   3 years