Debt - Mortgage Notes Payable - Summary of Mortgage Notes Payable Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Mortgage notes payable, net	$ 2,293,890	$ 1,941,610
Proceeds	58,428	519,204	$ 295,771
Lump sum payoffs	(156,815)	(160,522)	(743,021)
Scheduled principal repayments	(7,465)	(7,759)
Amortization of premiums/ discounts	2,764	2,234	8,618
Amortization of deferred financing costs, net	399	(877)
Mortgage notes payable, net	2,191,201	2,293,890	1,941,610
Fixed Rate Debt [Member] | Secured Conventional [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net	1,901,091	1,574,699
Proceeds	28,500	495,000
Lump sum payoffs	(28,200)	(160,522)
Scheduled principal repayments	(7,465)	(7,759)
Amortization of premiums/ discounts	1,522	988
Amortization of deferred financing costs, net	1,024	(1,315)
Mortgage notes payable, net	1,896,472	1,901,091	1,574,699
Floating Rate Debt [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net	392,799	366,911
Proceeds	29,928	24,204
Lump sum payoffs	(128,615)
Amortization of premiums/ discounts	1,242	1,246
Amortization of deferred financing costs, net	(625)	438
Mortgage notes payable, net	294,729	392,799	366,911
Floating Rate Debt [Member] | Secured Conventional [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net	31,494	7,050
Proceeds	29,928	24,204
Amortization of deferred financing costs, net	(1,532)	240
Mortgage notes payable, net	59,890	31,494	7,050
Floating Rate Debt [Member] | Secured Tax Exempt [Member]
Debt Instrument [Line Items]
Mortgage notes payable, net	361,305	359,861
Lump sum payoffs	(128,615)
Amortization of premiums/ discounts	1,242	1,246
Amortization of deferred financing costs, net	907	198
Mortgage notes payable, net	$ 234,839	$ 361,305	$ 359,861