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

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

No definition available.

Name:	fil_ValuationAllowanceForDeferredTaxAssets1
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant