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STATEMENTS OF COMPREHENSIVE INCOME (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Net income $ 204,310 $ 154,761
Other comprehensive income:    
Interest rate swap, before taxes 9,666 9,334
Income tax applicable to interest rate swap (3,856) (3,724)
Other comprehensive income, net of taxes 5,810 5,610
Total comprehensive income $ 210,120 $ 160,371