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Employee Benefit Plans - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended | 113 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012
Defined Benefit Plan Disclosure [Line Items] |  |  |
Employee benefit costs | $ 162,000 | $ 43,000 | $ 616,000
Discretionary Contributions [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discretionary match percentage | 100.00% |  |
Employee Contributions upto 3% [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage of compensation | 3.00% |  |
50% Percentage of Matching Contribution [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discretionary match percentage | 50.00% |  |
Employee Contribution Next 2% [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage of compensation | 2.00% |  |

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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Maximum percentage of employee gross pay, by the terms of the plan, that the employer may contribute to a defined contribution plan. + References No definition available. + Details
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- Definition Costs and payments related to employee benefits and equity-based compensation, such as pension expense and contributions, other postretirement benefits expense and payments, stock or unit options expense, and amortization of restricted stock or unit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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