Schedule III Real Estate Investments and Accumulated Depreciation - Summary of Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]
Balance at beginning of year	$ 208,279	$ 169,772
Amortization of lease intangible assets	6,702	10,123
Depreciation expense	37,020	33,630
Disposition of properties and write-offs	(13,928)	(5,246)
Balance at end of year	$ 238,073	$ 208,279