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Note 5 - Earnings Per Common Share (Detail)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 302,406 1,231,972 520,343 1,233,180