Quarterly report pursuant to Section 13 or 15(d)

Share-Based Payments - Non-vested Options Activity (Details)

v3.7.0.1
Share-Based Payments - Non-vested Options Activity (Details) - All Plans - Employee Stock Option
6 Months Ended
Mar. 31, 2017
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]  
Non-vested at beginning of period (in shares) | shares 77,400
Expired or forfeited (in shares) | shares (77,400)
Non-vested at end of period (in shares) | shares 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]  
Non-vested, weighted-average grant-date fair value, beginning of period (in dollars per share) | $ / shares $ 12.29
Expired or forfeited, weighted-average grant-date fair value (in dollars per share) | $ / shares 12.29
Non-vested, weighted-average grant-date fair value, end of period (in dollars per share) | $ / shares $ 0.00