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4. EARNINGS PER SHARE COMPUTATION (Detail) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Earnings Per Share [Abstract]    
Weighted Average Number of Shares Outstanding, Basic 9,209,719 9,823,269
Dilutive Securities, Effect on Basic Earnings Per Share (in Dollars) $ 10,898 $ 10,281
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 278,850 355,527