Fair Value Measurements and Derivative Instruments (Recurring Basis) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	$ 208,266	$ 274,106
Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Money market funds	267,623	426,748
Equity securities	13,233	29,356
Mortgage-backed / asset-backed securities	126,882	172,018
Total assets	512,914	752,602
Total liabilities	(1,472)	(304)
Fair Value, Recurring | Interest rate swaps
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset	15,283	3,103
Fair Value, Recurring | Foreign exchange contracts
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset	479	2,474
Derivative liability	(1,472)	(304)
Commingled fixed income securities
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	1,520	1,692
Commingled fixed income securities | Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	8,046	18,507
Government and related securities
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	27,545	35,229
Government and related securities | Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	29,049	35,229
Corporate debt securities
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	52,319	65,167
Corporate debt securities | Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	52,319	65,167
Level 1 | Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Money market funds	29,087	88,705
Equity securities	0	0
Mortgage-backed / asset-backed securities	0	0
Total assets	40,860	100,187
Total liabilities	0	0
Level 1 | Fair Value, Recurring | Interest rate swaps
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset	0	0
Level 1 | Fair Value, Recurring | Foreign exchange contracts
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset	0	0
Derivative liability	0	0
Level 1 | Commingled fixed income securities | Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	1,520	1,692
Level 1 | Government and related securities | Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	10,253	9,790
Level 1 | Corporate debt securities | Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	0	0
Level 2 | Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Money market funds	238,536	338,043
Equity securities	13,233	29,356
Mortgage-backed / asset-backed securities	126,882	172,018
Total assets	472,054	652,415
Total liabilities	(1,472)	(304)
Level 2 | Fair Value, Recurring | Interest rate swaps
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset	15,283	3,103
Level 2 | Fair Value, Recurring | Foreign exchange contracts
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset	479	2,474
Derivative liability	(1,472)	(304)
Level 2 | Commingled fixed income securities | Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	6,526	16,815
Level 2 | Government and related securities | Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	18,796	25,439
Level 2 | Corporate debt securities | Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	52,319	65,167
Level 3 | Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Money market funds	0	0
Equity securities	0	0
Mortgage-backed / asset-backed securities	0	0
Total assets	0	0
Total liabilities	0	0
Level 3 | Fair Value, Recurring | Interest rate swaps
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset	0	0
Level 3 | Fair Value, Recurring | Foreign exchange contracts
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset	0	0
Derivative liability	0	0
Level 3 | Commingled fixed income securities | Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	0	0
Level 3 | Government and related securities | Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	0	0
Level 3 | Corporate debt securities | Fair Value, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	$ 0	$ 0