Derivative Instruments and Hedging Activities - Summary of Effect of Swaps on Company's Financial Statements (Details) - Interest Rate Swaps - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Total Gain or (Loss) Recorded to AOCI	$ (9,867)	$ (3,362)
Amount of (Gain) or Loss Reclassified from AOCI into Income	$ 2,031	$ (387)