Share-Based Compensation (Details) (USD $)	3 Months Ended
Dec. 31, 2012
Stock option activity
Outstanding, Beginning Number of Shares	3,463,339
Outstanding, Beginning Weighted Average Exercise Price	$ 1.31
Granted, Number of shares	500
Granted, Weighted Average Exercise Price	$ 1.00
Forfeited/expired, Number of Shares	(85,800)
Forfeited/expired, Weighted Average Exercise Price	$ 1.34
Exercised, Number of shares	(24,700)
Exercised, Weighted Average Exercise Price	$ 0.78
Outstanding, Ending Number of Shares	3,353,339
Outstanding, Ending Weighted Average Exercise Price	$ 1.31
Exercisable, Number of Shares	2,604,055
Exercisable, Weighted Average Exercise Price	$ 1.27

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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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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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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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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