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5. Other Assets (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Other assets consisted of:    
Deposit with Trustee of 6-1/2% debentures $ 48,000us-gaap_DepositAssets $ 184,000us-gaap_DepositAssets
Prepaid expenses 2,000us-gaap_PrepaidExpenseCurrentAndNoncurrent 1,000us-gaap_PrepaidExpenseCurrentAndNoncurrent
Deferred charges 1,000us-gaap_OtherAssetsCurrent 1,000us-gaap_OtherAssetsCurrent
Total Other Assets $ 51,000us-gaap_OtherAssets $ 186,000us-gaap_OtherAssets