Annual report pursuant to Section 13 and 15(d)

Leases (Details 1)

v3.19.3.a.u2
Leases (Details 1) - United States Government - Concentration risk
12 Months Ended
Dec. 31, 2019
Lease Revenue, Risk Benchmark  
Concentration Risk [Line Items]  
Percentage of revenue 34.00%
Fixed Lease Revenue Benchmark  
Concentration Risk [Line Items]  
Percentage of revenue 25.00%