Commitments and Contingencies (Details) $ in Millions  | 
 Mar. 31, 2020  
USD ($)  
property 
 | 
|---|---|
| Commitments and Contingencies Disclosure [Abstract] | |
| Estimate of possible loss | $ 3.1 | 
| Environmental Indemnity Agreement | |
| Number of lease properties which were provided environmental indemnifications | property | 3 | 
| Maximum environmental indemnification to the tenant against consequential damages after acquisition of property | $ 19.0 | 
| Tax Incremental Financing Bond | Anne Arundel County, Maryland | Specialty Tax Guarantee | |
| Environmental Indemnity Agreement | |
| Purchase obligations | $ 34.0 | 
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- References No definition available. 
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- Definition Maximum additional costs agreed to be paid by the entity under environmental indemnification agreement No definition available. 
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- Definition Represents the number of properties in New Jersey which were provided environmental indemnifications by the entity. No definition available. 
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- References No definition available. 
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- Definition Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments. No definition available. 
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- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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