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10. RETIREMENT PLANS (Detail) - Net pension cost of the Company’s plan is as follows: (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2011
Service cost $ 30,840 $ 61,680
Interest 156,330 312,660
Expected return on assets (156,591) (313,182)
Amortization of unrecognized    
net gain or loss 54,763 109,526
Amortization of unrecognized    
prior service cost 18,801 37,602
Net pension cost $ 104,143 $ 208,286