Common Stock (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award, Additional Disclosures [Abstract]
Shares Issued During Period	3,500	300
Compensation Expense	$ 432	$ 247
Employee Stock Purchase Plan [Abstract]
Employee Stock Purchase Plan Discount Rate	95.00%
Employee Stock Purchase Plan Payroll Deduction Rate Minimum	1.00%
Employee Stock Purchase Plan Payroll Deduction Rate Maximum	10.00%
Employee Stock Purchase Plan Annual Limit	$ 20
Employee Stock Purchase Plan Share Limit Per Period	200
ESPP Shares Issued	2,113	1,734
2002 Stock Plan
Share-Based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares Authorized	64,032	67,032
Terms of Award	The term of any option may not exceed ten years from the date of grant.
Number Of Outstanding Options	3,592
Weighted Average Exercise Price	$ 0.18
2005 Stock Plan
Share-Based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares Authorized	929,707	932,438
Terms of Award	The compensation committee will determine the number and type of stock-based awards to each participant, the exercise price of each award, the duration of the award (not to exceed ten years), vesting provisions and all other terms and conditions of such award in individual award agreements.
Number Of Outstanding Options	30,361
Weighted Average Exercise Price	$ 17.85

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The annual limit for common stock purchases under the entity's Employee Stock Purchase Plan.

+ References

No definition available.

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- Definition

The percentage of fair market value on the date of purchase that employees are allowed to purchase common stock as a part of the entity's Employee Stock Purchase Plan.

+ References

No definition available.

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- Definition

The maximum payroll deduction rate that employees are allowed to set in order to accumulate amounts of common stock in the entity's Employee Stock Purchase Plan.

+ References

No definition available.

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The minimum payroll deduction rate that employees are allowed to set in order to accumulate amounts of common stock in the entity's Employee Stock Purchase Plan.

+ References

No definition available.

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- Definition

The limit for the number of shares than can be purchased during a purchasing period in the entity's Employee Stock Purchase Plan.

+ References

No definition available.

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- Definition

Equity-based compensation cost during the period with respect to the award, which will be recognized in income (as well as the total recognized tax benefit) or capitalized as part of the cost of an asset.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The number of shares newly issued during the reporting period under the plan.

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- Definition

Description of pertinent provisions of equity-based compensation awards that have actual or potential impact upon the company's financial statements.

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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