Schedule III Real Estate Investments and Accumulated Depreciation - Summary of Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]
Balance at beginning of year	$ 169,772	$ 139,814
Amortization of lease intangible assets	10,123	5,269
Depreciation expense	33,630	30,442
Disposition of properties and write-offs	(5,246)	(5,753)
Balance at end of year	$ 208,279	$ 169,772