Mortgage Debt - Mortgage Debt, Additional Information (Details) - Mortgage Debt [Member]	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Weighted-average interest rate of investment debt	3.40%	3.41%
Percent of property level debt with fixed rate	81.00%	76.00%
Percent of property level debt with floating rate and interest caps	14.00%	14.00%
Percent of property level debt with floating rate, without interest caps	5.00%	10.00%
Weighted average cap strike price	2.56%