Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation - Schedule of stock-based awards granted (Details)

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Share-Based Compensation - Schedule of stock-based awards granted (Details)
6 Months Ended
Mar. 31, 2017
shares
Stock options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options granted in period 475,892
Time-based stock awards  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock awards granted in period 35,983
Performance-based stock awards (maximum that can be earned)  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock awards granted in period 301,168