Income taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Taxes
Valuation allowance	$ 513,382	$ 540,196
Net deferred tax assets (net of valuation allowance)	1,009,068	953,676
Net deferred tax asset	1,007,780	951,037
Unrecognized tax benefits, accrued interest	2,300	2,600
Recognized Tax Benefits Current Interest On Income Taxes Accrued	199	268
Total amount of unrecognized tax benefits, that if recognized, would affect effective tax rate	2,900	4,300
Income tax expense	134,197	132,330	$ 309,018
Interest Expense Reduction Due To Expiration Of The Statue Of Limitations	475	448
Reduction as a result of lapse of statute of limitations		1,000
Net operating loss and other carryforward available	743,616
Increase (decrease) in valuation allowance	(27,000)
Income tax expense increase decrease	1,900
Other liabilities
Income Taxes
Net deferred tax liabilities	1,300	2,600
PR
Income Taxes
Valuation allowance	139,347	137,863
Net deferred tax asset	738,480	673,045
Income tax expense	134,197	132,330	$ 309,018
US
Income Taxes
Valuation allowance	374,035	402,333
Net deferred tax asset	269,300	277,992
Deferred Tax Assets	$ 643,000
Reversal of the deferred tax asset valuation allowance		$ 68,200