Summary of Significant Accounting Policies - Narrative (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2020 segment property	Dec. 31, 2019 property
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Weighted average remaining lease term	9 years
Number of real estate properties held for sale | property	0	0
Number of reportable segments | segment	1
Minimum
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Lease-up period	12 months
Maximum
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Lease-up period	18 months
2018 OPP
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Requisite service period	2 years 9 months 18 days