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Note 9 - Shareholders' Equity (Detail) - Stock Option Transactions (USD $)	12 Months Ended
	Dec. 31, 2011
Outstanding, December 31, 2011	1,194,796
Outstanding, December 31, 2011 (in Dollars per share)	$ 6.72
Outstanding, December 31, 2012	938,408
Outstanding, December 31, 2012 (in Dollars per share)	$ 6.23
Expired	(256,388)
Expired (in Dollars per share)	$ 8.56

- 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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