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10. Commitments & Contingencies (Details) (USD $)
Dec. 31, 2014
Notes to Financial Statements  
2015 $ 662,000us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent
2016 676,000us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears
2017 690,000us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears
2018 704,000us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears
2019 718,000us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears
Thereafter 1,166,000us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter
Total $ 4,616,000us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable