Percentage Of Stock Options Vested

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- Definition

Share Based Compensation Arrangement by Share Based Payment Award Number of Additional Shares Authorized

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- Definition

The cash inflow associated with the amount received from the stock plan during the period.

+ References

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- Definition

The discount rate from market value on offering date that participants pay for shares.

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

+ References

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- Definition

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).

+ References

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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- Definition

Gross number of share options (or share units) granted during the period.

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- Definition

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.

+ References

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- Definition

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

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

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Stock Options And Employee Stock Purchase Plan (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Number of options outstanding	2,102,123		3,794,394
Number of options granted	130,819
Cash received upon the issuance of common stock	$ 110,000	$ 85,000
Percentage of stock options vested	20.00%
Minimum [Member] \| 2007 Stock Plan [Member]
Market value of common stock on the date of grant for incentive stock options	85.00%
Restricted Stock [Member] \| 1997 Stock Option Plan [Member]
Number of stocks outstanding	33,840
1997 Stock Option Plan [Member]
Additional shares authorized for issuance	840,000
Maximum issuance of common stock	12,000,000
1997 Stock Option Plan [Member] \| Stock Options [Member]
Number of options outstanding	1,017,852
Restricted Stock Units (RSUs) [Member] \| 2007 Stock Plan [Member]
Number of stocks outstanding	715,843
2007 Stock Plan [Member]
Number of options granted	130,819
Maximum issuance of common stock	4,500,000
2007 Stock Plan [Member] \| Stock Options [Member]
Number of options outstanding	1,084,271
Employee Stock Purchase Plan [Member]
Market value of common stock on the date of grant for incentive stock options	95.00%
Maximum issuance of common stock	2,000,000
Maximum earnings withheld by the employees	15.00%
Number of shares purchased under the plan	4,127	3,937
Cash received upon the issuance of common stock	$ 110,000	$ 85,000
Number of shares available for issuance	1,652,506
Restricted Stock [Member]
Number of stocks outstanding	731,183		816,670
Restricted Stock Units (RSUs) [Member]
Number of stocks outstanding	18,500		17,500