Note 1 - Summary of Significant Interim Accounting Policies (Detail) - Options Transactions (USD $)	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011
Outstanding December 31, 2011	671,500
Outstanding December 31, 2011 (in Dollars per share)	$ 10.66
Granted	194,223
Granted (in Dollars per share)	$ 12.62
Exercised	(74,045)	(10,900)
Exercised (in Dollars per share)	$ 9.68
Lapsed	(86,400)
Lapsed (in Dollars per share)	$ 12.57
Cancelled	(23,354)
Cancelled (in Dollars per share)	$ 12.44
Outstanding September 30, 2012	681,924
Outstanding September 30, 2012 (in Dollars per share)	$ 11.02

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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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.

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

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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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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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