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Related party transactions (Details) - USD ($) | Dec. 31, 2015 | Mar. 31, 2015 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
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Related party transactions |  |  |  |  |
The company has recorded a reserve of (the full balance) for the combined note. |  |  |  |  | $ 10,000,000
Company incurred obligations to Pillar totaling approximately |  |  |  | $ 2,100,000 | 2,100,000
Pillar agreed to relieve the Company of its obligation to pay |  |  |  | 2,100,000 | $ 2,100,000
Company incurred obligations to Pillar totaling to which was reduced by Prime by a like amount approximately |  |  | $ 1,600,000 |  |
Obligations to pay | $ 1,400,000 |  |  |  |
The Company and several other defendants settled a lawsuit |  |  |  | 225,000 |
Paid the entire amount and has a note receivable from one of the other defendants |  |  |  | $ 112,500 |
Accrued interest thereon was paid |  | $ 112,500 |  |  |

X
- Definition Accrued interest thereon was paid + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Company incurred obligations to Pillar totaling approximately + References No definition available. + Details
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Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Company incurred obligations to Pillar totaling to which was reduced by Prime by a like amount approximately + References No definition available. + Details
Name: | fil_CompanyIncurredObligationsToPillarTotalingToWhichWasReducedByPrimeByALikeAmountApproximately
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Obligations to pay + References No definition available. + Details
Name: | fil_ObligationsToPay
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The Company and several other defendants settled a lawsuit + References No definition available. + Details
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Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Pillar agreed to relieve the Company of its obligation to pay + References No definition available. + Details
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Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The Company and several other defendants settled a lawsuit + References No definition available. + Details
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Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The company has recorded a reserve of (the full balance) for the combined note. + References No definition available. + Details
Name: | fil_TheCompanyHasRecordedAReserveOfTheFullBalanceForTheCombinedNote
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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Period Type: | duration