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Note 8 - Stock-Based Compensation (Detail)	9 Months Ended
Note 8 - Stock-Based Compensation (Detail)	Sep. 30, 2012	Jun. 23, 2011	Jun. 22, 2011	May 30, 2007	May 29, 2007
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
The 2005 Plan [Member] \| Additional [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		5,000,000
The 2005 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	1,650,000	7,250,000	2,250,000	2,250,000	750,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	1,069,692
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	7,500
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Initial Term	5 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Initial Term	10 years

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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- 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.

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