Derivative Instruments and Hedging Activity - Consolidated statements of operations and other comprehensive loss (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest Expense [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments, Amount of Income/(Loss) Reclassified from Accumulated OCI into Expense	$ 754	$ 1,028	$ 2,447	$ 1,365
Loss on Extinguishment of Debt and Settlement of Related Hedges [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments, Amount of Income/(Loss) Reclassified from Accumulated OCI into Expense	13,363		13,363
Interest rate swap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Other comprehensive income (loss) - change in fair value and settlement of interest rate swaps	$ (11,600)	$ (3,289)	$ 12,353	$ (36,667)