Leases (Tables)

3 Months Ended

Mar. 31, 2020

Leases [Abstract]

Components of Lease Expense

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

	Three Months Ended March 31,
	2020			2019
Operating lease cost	$	13,136		$	12,861
Variable lease cost		974			1,052
Short-term lease cost		45			52
Sublease income		(1,131	)		(1,593	)
Total lease expense	$	13,024		$	12,372

Supplemental Cash Flow Information Related to Leases

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

	Three Months Ended March 31,
	2020		2019
Operating cash outflow from operating leases	$	13,367	$	14,377
Right-of-use assets obtained in exchange for lease obligations	$	21,822	$	128,704

Maturities of Operating Lease Liabilities

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

Year Ending December 31,	Operating Leases
2020	$	37,395
2021		43,231
2022		28,941
2023		20,119
2024		15,597
Thereafter		30,881
Total		176,164
Less: Finance charges		27,563
Total principal liability	$	148,601