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Income Taxes - Valuation Allowance for deferred tax assets (Details) (USD $) | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
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Income Taxes - Valuation Allowance for deferred tax assets |  |  |
Valuation Allowance for deferred tax assets | $ 1,400,000 fil_ValuationAllowanceForDeferredTaxAssets1 | $ 1,400,000 fil_ValuationAllowanceForDeferredTaxAssets1 | $ 1,500,000 fil_ValuationAllowanceForDeferredTaxAssets1

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- Details
Name: | fil_IncomeTaxesValuationAllowanceForDeferredTaxAssetsAbstract
Namespace Prefix: | fil_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer + References No definition available. + Details
Name: | fil_ValuationAllowanceForDeferredTaxAssets1
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant