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Operating leases (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Operating leases Future Minimum Payments |  |  |
Lease expensesincurred | $ 942,000 | $ 924,000 | $ 906,000
Primary lease Minimum payments 2014 | 961 |  |
Primary lease Minimum payments 2015 | 980 |  |
Primary lease Minimum payments 2016 | 1,000 |  |
Primary lease Minimum payments 2017 | 83 |  |
Primary lease Minimum payments total | $ 3,024 |  |

X
- Definition The total amount of rentals incurred in the period on property subject to subleasing arrangements + References No definition available. + Details
Name: | fil_LeaseExpensesincurred
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Amount of minimum lease payments for capital leases. + References No definition available. + Details
Name: | fil_PrimaryLeaseMinimumPayments2014
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of minimum lease payments for capital leases. + References No definition available. + Details
Name: | fil_PrimaryLeaseMinimumPayments2015
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of minimum lease payments for capital leases. + References No definition available. + Details
Name: | fil_PrimaryLeaseMinimumPayments2016
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of minimum lease payments for capital leases. + References No definition available. + Details
Name: | fil_PrimaryLeaseMinimumPayments2017
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of minimum lease payments for capital leases. + References No definition available. + Details
Name: | fil_PrimaryLeaseMinimumPaymentsTotal
Namespace Prefix: | fil_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration