Annual report pursuant to Section 13 and 15(d)

Debt (Wells Fargo Note Payable) (Details)

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Debt (Wells Fargo Note Payable) (Details)
12 Months Ended
Dec. 31, 2018
Wells Fargo note payable | LIBOR  
Debt Instrument [Line Items]  
Basis spread on variable rate (as a percent) 2.25%