Note 9 - Shareholders' Equity (Detail) - Summary of nonvested option activity In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Nonvested at January 1, 2012	513
Granted	296
Vested	(245)
Forfeited	(43)
Nonvested at December 31, 2012	521
Nonvested at December 31, 2012	5.77

The number of nonvested options that were forfeited during the reporting period.

No definition available.

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- Definition

The number of grants made during the period on nonvested option plans.

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No definition available.

+ Details

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- Definition

The number of non-vested options that validly exist and are outstanding as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

The number of nonvested options that vested during the reporting period.

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No definition available.

+ Details

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- Definition

The weighted average fair value of nonvested awards on option plans or which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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No definition available.

+ Details

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