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Real Estate Asset Acquisition (Details) - USD ($) $ in Thousands | Dec. 14, 2021 | Aug. 02, 2021 | Jun. 02, 2021
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153 & 211 Second Avenue [Member] |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Land |  |  | $ 33,233
Building and improvements |  |  | 53,309
Tenant improvements |  |  | 2,631
Net assets acquired |  |  | 100,176
153 & 211 Second Avenue [Member] | In-Place Lease Intangibles |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Lease Intangibles |  |  | 13,415
153 & 211 Second Avenue [Member] | Below Market Lease Intangible [Member] |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Lease Intangibles |  |  | $ (2,412)
Shady Grove Innovation District [Member] |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Land |  | $ 52,030 |
Building and improvements |  | 63,060 |
Tenant improvements |  | 1,152 |
Net assets acquired |  | 118,504 |
Shady Grove Innovation District [Member] | In-Place Lease Intangibles |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Lease Intangibles |  | 2,523 |
Shady Grove Innovation District [Member] | Above Market Lease Intangibles [Member] |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Lease Intangibles |  | 142 |
Shady Grove Innovation District [Member] | Below Market Lease Intangible [Member] |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Lease Intangibles |  | $ (403) |
360 Park Avenue South |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Land | $ 215,448 |  |
Building and improvements | 85,220 |  |
Net assets acquired | $ 300,668 |  |

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- Definition Amount of assets acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details
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- Definition Amount of facility held for productive use including, but not limited to, office, production, storage and distribution facilities, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details
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- Definition Amount of real estate acquired, at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details
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