| Statements of Income And Total Comprehensive Income (Unaudited) (Parentheticals) (USD $) | 3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
| Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011 | |
| Net of income taxes | $ 6,116 | $ 5,248 | $ 12,233 | $ 10,495 | 
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- Definition Tax effect of other comprehensive income (loss) attributable to parent entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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