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Income Taxes (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Abstract]      
Annual dividends distribution percentage to shareholders to qualify as a REIT 90.00%    
Income tax related to gain on sale of available-for-sale investments     $ 1,000,000
Significant temporary differences or tax credits associated with our taxable REIT subsidiaries 0    
Operating Loss Carryforwards 16,300,000    
Statement [Line Items]      
Difference Between Carry Value Of Net Assets And Tax Basis Of Net Assets 1,200,000,000    
Income tax expense 1,826,000 1,208,000 2,220,000
Uncertain tax positions or unrecognized tax benefits $ 0    
Minimum [Member]
      
Statement [Line Items]      
Operating Loss Carryforwards, Expiration Dates Jan. 01, 2030    
Maximum [Member]
      
Statement [Line Items]      
Operating Loss Carryforwards, Expiration Dates Jan. 01, 2033