Real Estate - Estimated Annual Amortization (Income) Expense for In-Place Lease (Details) $ in Thousands	Mar. 31, 2019 USD ($)
In-Place Lease Valuation
Remaining 2019	$ (3,537)
2020	(4,695)
2021	(3,799)
2022	(3,774)
2023	(2,901)
Tenant Origination and Absorption Cost
Tenant Origination and Absorption Costs
Remaining 2019	18,232
2020	24,198
2021	19,715
2022	19,256
2023	$ 16,502

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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