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Earnings Per Share - Additional Information (Details) - $ / shares shares in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2017 | Mar. 31, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Earnings Per Share, Potentially Dilutive Securities |  |  |  | 1.8
Document Fiscal Year Focus |  |  | 2017 |
Basic (in dollars per share) | $ (0.41) | $ (0.12) | $ 0.65 | $ (0.30)
Stock option awards [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 1,820 |  | 1,708 |
Warrant [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 235 |  | 177 |
Restricted stock awards [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 393 |  | 846 |
Warrant [Member] | HGI [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price | $ 13.13 | $ 13.125 | $ 13.13 | $ 13.125

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