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Stock-Based Compensation (Stock Options Exercisable) (Details) (Stock Options, USD $) | 12 Months Ended
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Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number Exercisable | 400,638 | 232,018 | 259,595
Weighted Average Exercise Price | $ 9.25 | $ 8.31 | $ 7.97
Aggregate Intrinsic Value | $ 0 |  |
Closing Stock Price Per Share | $ 3.31 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value | 100,000 | 1,300,000 | 1,800,000
3.01 - 7.00 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number Exercisable | 191,162 |  |
Weighted Average Exercise Price | $ 5.09 |  |
Aggregate Intrinsic Value | 0 |  |
7.01 - 10.00 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number Exercisable | 31,000 |  |
Weighted Average Exercise Price | $ 7.84 |  |
Aggregate Intrinsic Value | 0 |  |
10.01 - 15.00 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number Exercisable | 130,161 |  |
Weighted Average Exercise Price | $ 12.68 |  |
Aggregate Intrinsic Value | 0 |  |
15.01 - 23.00 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number Exercisable | 48,315 |  |
Weighted Average Exercise Price | $ 17.33 |  |
Aggregate Intrinsic Value | $ 0 |  |

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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + 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 (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(c), d(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + 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 (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(c) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan. + 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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