Summary of Significant Accounting Policies - Future Amortization of Deferred Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Year Ending December 31,
2020 (Remaining)	$ 30,065
2021	29,374
2022	28,180
2023	27,234
2024	24,844
Thereafter	187,647
Total	327,344
Total	(27,341)	$ (26,668)
Credit Facility Financing Costs
Year Ending December 31,
2020 (Remaining)	14,668
2021	13,406
2022	12,596
2023	11,626
2024	10,378
Thereafter	54,804
Total	117,478
Leasing Costs
Year Ending December 31,
2020 (Remaining)	20,623
2021	20,434
2022	19,373
2023	18,482
2024	16,665
Thereafter	141,630
Total	237,207
Lease Intangibles (Below-Market)
Year Ending December 31,
2020 (Remaining)	(5,226)
2021	(4,466)
2022	(3,789)
2023	(2,874)
2024	(2,199)
Thereafter	(8,787)
Total	$ (27,341)