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Real Estate Investments (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Schedule of Investments [Line Items]          
Land $ 17,297   $ 17,297   $ 17,297
Buildings and improvements 56,267   56,267   56,168
Intangibles 329   329   329
Subtotal 73,893   73,893   73,794
Less accumulated depreciation and amortization 12,371   12,371   11,593
Total 61,522   61,522   $ 62,201
Proceeds from Sale of Real Estate Held-for-investment       $ 4,450  
Gain on sale of real estate investment $ 0 $ 273 $ 0 273  
Real Estate Selling Expenses       $ 169  
Minimum          
Schedule of Investments [Line Items]          
Estimated useful life     5 years    
Maximum          
Schedule of Investments [Line Items]          
Estimated useful life     39 years