Fair value measurements - Gains (Losses) On Derivative Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in net income (loss)	$ (2,455)	$ 5,500	$ 10,610	$ 12,684
Amount of gain (loss) recognized in other comprehensive income (loss)	(12,558)	4,539	416	20,292
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in net income (loss)	$ (1,631)	$ 5,210	$ 8,452	$ 13,567
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense, Operating and Nonoperating	Interest Expense, Operating and Nonoperating	Interest Expense, Operating and Nonoperating	Interest Expense, Operating and Nonoperating
Interest Rate Swap [Member] | Cash Flow Hedge Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income (loss)	$ (4,380)	$ 3,253	$ 1,960	$ 13,302
Interest Rate Cap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in net income (loss)	$ (559)	$ 170	$ 1,480	$ (949)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense, Operating and Nonoperating	Interest Expense, Operating and Nonoperating	Interest Expense, Operating and Nonoperating	Interest Expense, Operating and Nonoperating
Interest Rate Cap [Member] | Cash Flow Hedge Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income (loss)	$ (8,746)	$ 1,476	$ (1,841)	$ 6,627
Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in net income (loss)	$ (265)	$ 120	$ 678	$ 66
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense	Selling, General and Administrative Expense	Selling, General and Administrative Expense	Selling, General and Administrative Expense
Foreign Exchange Contract [Member] | Cash Flow Hedge Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income (loss)	$ 568	$ (190)	$ 297	$ 363