Derivative Financial Instruments - Changes in net loss on cash flow hedges included in accumulated other comprehensive income (loss) (Details) - Interest Rate Swap - Cash Flow Hedging - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Changes in Net Gain or Loss on Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of the period	$ (1,608)	$ (14,259)	$ (8,504)	$ (16,771)
Unrealized gain (loss) recognized in other comprehensive income (loss), net of tax	1,481	(712)	6,501	(183)
Reclassification to interest expense, net of tax	1,385	1,937	3,261	3,920
Balance at the end of the period	$ 1,258	$ (13,034)	$ 1,258	$ (13,034)