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Stock Award Plans - Nonvested Stock Options (Details) - USD ($) | 12 Months Ended
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Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Unrecognized compensation cost for stock options, net of forfeitures | $ 0 |  |
Options Outstanding |  |  |
Granted (in shares) | 0 | 0 | 0
Weighted Average Grant Date Fair Value |  |  |
Granted (USD per share) | $ 2.73 | $ 2.96 | $ 2.95
Non-Vested Options |  |  |
Options Outstanding |  |  |
Outstanding at beginning of period (in shares) | 69,287 | 145,795 | 287,750
Granted (in shares) | 0 | 0 | 0
Vested (in shares) | (62,227) | (61,018) | (119,520)
Forfeited (in shares) | (7,060) | (15,490) | (22,435)
Outstanding at end of period (in shares) | 0 | 69,287 | 145,795
Weighted Average Grant Date Fair Value |  |  |
Outstanding at beginning of period (USD per share) | $ 3.85 | $ 3.87 | $ 3.44
Granted (USD per share) | 0.00 | 0.00 | 0.00
Vested (USD per share) | 3.91 | 3.88 | 2.88
Forfeited (USD per share) | 3.89 | 3.90 | 3.63
Outstanding at end of period (USD per share) | $ 0.00 | $ 3.85 | $ 3.87

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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of non-vested options outstanding. + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Number of non-vested options forfeited. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of non-vested options forfeited. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of non-vested options outstanding. + References No definition available. + Details
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- Definition Number of options vested. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of options vested. + References No definition available. + Details
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- Details
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