Derivative Instruments and Hedging Activity - Consolidated statements of operations and other comprehensive loss (Details) - Interest rate swap - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Other comprehensive income (loss) - change in fair value and settlement of interest rate swaps	$ 23,954	$ (33,379)
Interest Expense [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments, Amount of Income/(Loss) Reclassified from Accumulated OCI into Expense	$ 1,693	$ 337