Leases (Tables)

6 Months Ended

Jun. 30, 2021

Leases [Abstract]

Components of Lease Expense

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

	Three Months Ended June 30,						Six Months Ended June 30,
	2021			2020			2021			2020
Operating lease expense
Operating lease cost	$	12,400		$	12,869		$	25,215		$	26,005
Variable lease cost		1,656			410			3,024			1,384
Short-term lease cost		238			95			577			140
Sublease income		(1,828	)		(1,058	)		(3,812	)		(2,189	)
Finance lease expense
Amortization of right-of-use assets		606			—			1,217			—
Interest on lease liabilities		83			—			171			—
Total lease expense	$	13,155		$	12,316		$	26,392		$	25,340

Supplemental Cash Flow Information Related to Leases

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

	Six Months Ended June 30,
	2021		2020
Operating cash outflow from operating leases	$	27,470	$	25,955
Operating cash outflow from finance leases	$	173	$	—
Financing cash outflow from finance leases	$	956	$	—
Right-of-use assets obtained in exchange for operating lease obligations	$	13,729	$	31,178
Right-of-use assets obtained in exchange for finance lease obligations	$	59	$	—

Maturities of Lease Liabilities

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

Year Ending December 31	Operating Leases		Finance Leases
2021	$	24,079	$	1,109
2022		34,753		2,230
2023		24,074		2,148
2024		18,965		2,035
2025		14,237		1,436
Thereafter		41,227		262
Total		157,335		9,220
Less: Finance charges		19,479		722
Total principal liability	$	137,856	$	8,498