Fair Value Measurements - Narrative (Details) - Property	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Measurement Input, Price Per Square Foot | Minimum | Impact of COVID-19
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Price per square foot, discount rate	0.00%
Measurement Input, Price Per Square Foot | Maximum | Impact of COVID-19
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Price per square foot, discount rate	10.00%
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of lease, expiration period (or less)	60 days
Number Of Properties Accounted For At Fair Value	22	16
Fair Value, Measurements, Nonrecurring | Fair Value Estimated Using Capitalization Rate | Measurement Input Capitalization Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number Of Properties Accounted For At Fair Value	1	1
Long Lived Assets Estimated Capitalization Rate Fair Value Disclosure	10.06%	9.62%