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Compensation Expense (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Recognized compensation expenses | $ 141,720 | $ 196,183
Income Tax benefit recognized from stock based compensation | $ 35,430 | $ 49,046

X
- Definition Income Tax benefit recognized from stock based compensation + References No definition available. + Details
Name: | fil_IncomeTaxBenefitRecognizedFromStockBasedCompensation
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Recognized compensation expenses + References No definition available. + Details
Name: | fil_RecognizedCompensationExpenses
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration