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Principal payments due on notes payable for next five years (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Principal payments due on notes payable  
Principal payment due in 2015 $ 1,054fil_PrincipalPaymentDueIn2015
Principal payment due in 2016 9,184fil_PrincipalPaymentDueIn2016
Principal payment due in 2017 1fil_PrincipalPaymentDueIn2017
Principal payment due in 2018 1fil_PrincipalPaymentDueIn2018
Principal payment due in 2019 0fil_PrincipalPaymentDueIn2019
Principal payments due there after 0fil_PrincipalPaymentsDueThereAfter
Total Principal payment due $ 10,240fil_TotalPrincipalPaymentDue