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Assets Held for Sale (Details) (USD $)
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Long Lived Assets Held-for-sale [Line Items]      
Intended selling price of Remington Village $ 15,000,000    
Liabilities held for sale 9,978,000   10,022,000
Depreciation of assets held for sale not recorded 220,000 224,000  
Assets and liabilities of the multifamily housing project held for sale [Abstract]      
Cash and cash equivalents 358,000   211,000
Accounts receivable 37,000   19,000
Prepaid expenses 78,000   42,000
Property, plant and equipment, net 14,775,000   14,775,000
Restricted investment 121,000   120,000
Assets of discontinued operations 15,369,000   15,167,000
Corporate aircraft and related facilities 0   1,884,000
Assets held for sale 15,369,000   17,051,000
Accounts payable 125,000   144,000
Accrued and other liabilities 311,000   257,000
Long term debt 9,542,000   9,621,000
Liabilities held for sale 9,978,000   10,022,000
Facilities [Member]
      
Long Lived Assets Held-for-sale [Line Items]      
Proceeds from sale of assets held for sale $ 767,000