Leases (Tables)

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

Components of Lease Expense

The components of lease expense were as follows (U.S. dollars in thousands):

	Year Ended December 31,
	2021			2020			2019
Operating lease expense
Operating lease cost	$	48,447		$	51,828		$	51,072
Variable lease cost		5,734			4,366			3,387
Short-term lease cost		592			1,056			169
Sublease income		(5,663	)		(5,052	)		(5,743	)
Finance lease expense
Amortization of right-of-use assets		2,398			1,023			—
Interest on lease liabilities		319			154			—
Total lease expense	$	51,827		$	53,375		$	48,885

Supplemental Cash Flow Information Related to Leases

Supplemental cash flow information related to leases was as follows (U.S. dollars in thousands):

	Year Ended December 31,
	2021		2020		2019
Operating cash outflow from operating leases	$	51,570	$	56,395	$	54,993
Operating cash outflow from finance leases	$	322	$	138	$	—
Financing cash outflow from finance leases	$	1,871	$	709	$	—
Right-of-use assets obtained in exchange for operating lease obligations	$	25,427	$	82,662	$	184,502
Right-of-use assets obtained in exchange for finance lease obligations	$	74	$	9,206	$	—

Maturities of Lease Liabilities

Maturities of lease liabilities were as follows (U.S. dollars in thousands):

Year Ending December 31,	Operating Leases		Finance Leases
2022	$	35,960	$	2,152
2023		24,806		2,064
2024		19,254		1,954
2025		14,336		1,381
2026		7,341		260
Thereafter		36,612		—
Total		138,309		7,811
Less: Finance charges		17,658		548
Total principal liability	$	120,651	$	7,263