Quarterly report pursuant to Section 13 or 15(d)

Our Portfolio - Real Estate, Additional Information (Details)

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Our Portfolio - Real Estate, Additional Information (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2018
USD ($)
Mar. 31, 2017
USD ($)
a
project
Investment [Line Items]    
Are of land purchased (in acres) | a   4,000
Number of solar projects | project   20
Payments to Acquire Other Real Estate   $ 145,000
Portfolio cost $ 0 106,854
Lease Intangibles [Member]    
Investment [Line Items]    
Portfolio cost   $ 56,000
Joint Venture [Member]    
Investment [Line Items]    
Are of land purchased (in acres) | a   1,100
Real Estate Portfolio [Member]    
Investment [Line Items]    
Real estate portfolio acquired value through equity interest in joint venture   $ 21,000