Derivative Financial Instruments Derivative Financial Instruments - Schedule of LIBOR interest rate caps (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Feb. 28, 2020	Jan. 28, 2020	Jan. 10, 2020	Dec. 31, 2019	May 15, 2019	Dec. 11, 2018	Jul. 16, 2018	Mar. 07, 2018
Derivative [Line Items]
Notional Amount	$ 791,294				$ 496,642
Interest Rate Caps | LIBOR
Derivative [Line Items]
Notional Amount	450,000
Premium Paid	1,387
Not designated as accounting hedges
Derivative [Line Items]
Notional Amount	300,000				350,000
Not designated as accounting hedges | Interest Rate Caps
Derivative [Line Items]
Notional Amount	250,000				$ 250,000
Not designated as accounting hedges | Interest Rate Caps | LIBOR
Derivative [Line Items]
Notional Amount						$ 100,000	$ 50,000	$ 50,000	$ 50,000
Strike Rate						2.50%	2.75%	2.50%	2.25%
Premium Paid						$ 288	$ 210	$ 319	$ 310
Designated as accounting hedge | Interest Rate Caps
Derivative [Line Items]
Notional Amount	$ 200,000
Designated as accounting hedge | Interest Rate Caps | LIBOR
Derivative [Line Items]
Notional Amount		$ 100,000	$ 50,000	$ 50,000
Strike Rate		1.50%	1.75%	1.75%
Premium Paid		$ 111	$ 62	$ 87