Quarterly report pursuant to Section 13 or 15(d)

STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical)

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STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical) (USD $)
9 Months Ended
Sep. 30, 2012
COMPREHENSIVE INCOME, NET OF TAX  
Reclassification of Derivative Instruments Included in Income, Tax $ 39,000