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Leases (Details 2) $ in Millions | 3 Months Ended
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Mar. 31, 2019 USD ($) Lease
Land |
Lessee, Lease, Description [Line Items] |
Lessee right-of-use asset | $ 68.1
Land | Minimum |
Lessee, Lease, Description [Line Items] |
Remaining term of contract | 30 years
Land | Maximum |
Lessee, Lease, Description [Line Items] |
Remaining term of contract | 97 years
Vehicles and Office Equipment |
Lessee, Lease, Description [Line Items] |
Lessee right-of-use asset | $ 1.2
Washington, DC | Land |
Lessee, Lease, Description [Line Items] |
Number of contracts | Lease | 2
Remaining term of contract | 80 years
Lessee right-of-use asset | $ 10.4
Baltimore, Maryland | Land |
Lessee, Lease, Description [Line Items] |
Renewal term | 49 years
Remaining term of contract | 30 years
Lessee right-of-use asset | $ 6.5
Stevens Investors, LLC | Washington, DC | Land |
Lessee, Lease, Description [Line Items] |
Remaining term of contract | 97 years
Lessee right-of-use asset | $ 37.8
M Square Associates, LLC | College Park, Maryland | Land |
Lessee, Lease, Description [Line Items] |
Number of contracts | Lease | 4
Lessee right-of-use asset | $ 6.7
M Square Associates, LLC | College Park, Maryland | Land | Minimum |
Lessee, Lease, Description [Line Items] |
Remaining term of contract | 64 years
M Square Associates, LLC | College Park, Maryland | Land | Maximum |
Lessee, Lease, Description [Line Items] |
Remaining term of contract | 75 years
LW Redstone Company, LLC | Huntsville, Alabama | Land |
Lessee, Lease, Description [Line Items] |
Renewal term | 25 years
Number of contracts | Lease | 9
Lessee right-of-use asset | $ 4.3
LW Redstone Company, LLC | Huntsville, Alabama | Land | Minimum |
Lessee, Lease, Description [Line Items] |
Remaining term of contract | 44 years
LW Redstone Company, LLC | Huntsville, Alabama | Land | Maximum |
Lessee, Lease, Description [Line Items] |
Remaining term of contract | 50 years
Fort Meade/BW Corridor | Land |
Lessee, Lease, Description [Line Items] |
Number of contracts | Lease | 2
Remaining term of contract | 49 years
Lessee right-of-use asset | $ 2.3

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