Stock-Based Compensation Stock Option Activity (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
Mar. 31, 2015
Number of Stock Options
Options outstanding at beginning of period (shares)	5,550
Options forfeited / expired (shares)	5,550
Options outstanding at end of period (shares)	0
Vested at end of period (shares)	0
Options exercisable at end of period (shares)	0
Weighted-Average Remaining Contractual Term
Options outstanding at end of period	0 years
Vested at end of period	0 years
Options exercisable at end of period	0 years
Weighted Average Exercise Price
Options outstanding at beginning of period (USD per share)	$ 13.20
Options forfeited / expired (USD per share)	$ 13.20
Options outstanding at end of year (USD per share)	$ 0.00
Vested at end of period (USD per share)	$ 0.00
Options exercisable at end of period (USD per share)	$ 0.00
Options outstanding at end of period	$ 0
Vested at end of period	0
Options exercisable at end of period	$ 0

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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.

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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.

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-Publisher FASB

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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.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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