| Property Portfolio - Summary of the carrying amount of intangible assets and liabilities (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019 | 
|---|---|---|
| Assets | ||
| Cost | $ 83,269 | $ 72,794 | 
| Accumulated Amortization | (18,722) | (13,675) | 
| Net | 64,547 | 59,119 | 
| Liabilities | ||
| Cost | 6,670 | 3,861 | 
| Accumulated Amortization | (1,072) | (697) | 
| Net | 5,598 | 3,164 | 
| In-place leases [Member] | ||
| Assets | ||
| Cost | 47,031 | 39,429 | 
| Accumulated Amortization | (10,847) | (7,851) | 
| Net | 36,184 | 31,578 | 
| Above Market Lease intangibles [Member] | ||
| Assets | ||
| Cost | 12,932 | 12,246 | 
| Accumulated Amortization | (3,144) | (2,366) | 
| Net | 9,788 | 9,880 | 
| Leasing Costs [Member] | ||
| Assets | ||
| Cost | 23,306 | 21,119 | 
| Accumulated Amortization | (4,731) | (3,458) | 
| Net | $ 18,575 | $ 17,661 | 
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- References No definition available. 
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- Definition Amount of accumulated amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life. No definition available. 
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- Definition Amount before amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life. No definition available. 
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- Definition Amount after amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life. No definition available. 
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- References No definition available. 
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