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Note 12 - Treasury Stock Transactions (Detail) (USD $)	1 Months Ended	3 Months Ended	6 Months Ended	29 Months Ended
Note 12 - Treasury Stock Transactions (Detail) (USD $)	Feb. 28, 2010	Jun. 30, 2012	Jun. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
Stock Repurchase Program, Authorized Amount	$ 7,500,000
Stock Repurchased During Period, Shares (in Shares)		695,252	750,014
Stock Repurchased During Period, Value		$ (3,800,000)	$ (4,070,000)	$ (6,800,000)
Stock Repurchase Average Price Per Share (in Dollars per share)		$ 5.43	$ 5.43	$ 5.06
Treasury Stock, Shares (in Shares)		1,341,800	1,341,800	1,341,800	591,786

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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