Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019		Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting change	$ 646,946	$ 638,401	$ 655,447		$ 606,442	$ 477,686	$ 455,890
Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting change			(3,009)	[1]			$ (167)	[2]
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings | Accounting Standard Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting change			(3,000)
Cumulative Effect, Period of Adoption, Adjustment | Mezzanine Loan | Retained Earnings | Accounting Standard Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting change			2,800
Cumulative Effect, Period of Adoption, Adjustment | Construction Receivables | Retained Earnings | Accounting Standard Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting change			$ 200

[1] The Company recorded cumulative effect adjustments related to the new Current Expected Credit Losses ("CECL") standard in the first quarter of 2020. See "Financial Statements — Note 2 — Significant Accounting Policies — Recent Accounting Pronouncements” for additional information.

[2] The Company recorded cumulative effect adjustments related to the new lease standard in the first quarter of 2019.