Derivative Financial Instruments - Changes in Net Loss on Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) (Details) - Interest rate swap agreements - Cash flow hedges - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax [Roll Forward]
Balance at the beginning of the period	$ (16,771)	$ (10,137)
Unrealized loss (gain) recognized in other comprehensive income, net of tax	400	(13,230)
Reclassification to interest expense, net of tax	7,867	6,596
Balance at the end of the period	$ (8,504)	$ (16,771)