Financial Instruments and Fair Value Measurements - Schedule of Derivative Financial Instruments (Parenthetical) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($) derivative	Dec. 31, 2019 USD ($)
Derivatives, Fair Value [Line Items]
Fair value, liability derivatives	$ (109,040)	$ (39,061)
Core Portfolio
Derivatives, Fair Value [Line Items]
Derivative, notional amount	562,035
Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Derivative, notional amount	$ 50,000
Interest Rate Swaps | Core Portfolio | July 2018 Acquisition
Derivatives, Fair Value [Line Items]
Number of derivative instruments held | derivative	2
Fair value, liability derivatives	$ (27,000)	$ (11,800)
Derivative Effective Date	2020-07
Derivative, notional amount	$ 125,000
Interest Rate Swaps | Core Portfolio | February 2020 Swap One Acquisition
Derivatives, Fair Value [Line Items]
Number of derivative instruments held | derivative	1
Fair value, liability derivatives	$ (3,200)
Derivative Effective Date	2023-04
Derivative, notional amount	$ 50,000
Interest Rate Swaps | Core Portfolio | February 2020 Swap Two Acquisition
Derivatives, Fair Value [Line Items]
Number of derivative instruments held | derivative	1
Fair value, liability derivatives	$ (2,900)
Derivative Effective Date	2023-04
Derivative, notional amount	$ 50,000