Leases (Tables)

9 Months Ended

Sep. 30, 2019

Leases [Abstract]

Components of Lease Expense

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

	Three Months Ended September 30, 2019		Nine Months Ended September 30, 2019
Operating lease cost	$	12,399	$	37,677
Short-term lease cost		41		145
Variable lease cost		732		2,889
	$	13,172	$	40,711

Supplemental Cash Flow Information Related to Leases

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

	Nine Months Ended September 30, 2019
Operating cash outflow from operating leases	$	39,885
ROU assets obtained in exchange for lease obligations	$	150,127

Maturities of Operating Lease Liabilities

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

Year Ending December 31,	Operating leases
2019	$	12,801
2020		39,764
2021		32,965
2022		18,419
2023		11,387
Thereafter		15,721
Total		131,057
Less: Finance charges		12,860
Total principal liability	$	118,197

Minimum Future Operating Leases and Financing Obligations

Under ASC Topic 840, minimum future operating leases and financing obligations at December 31, 2018 are as follows (U.S. dollars in thousands):

Year Ending December 31,	Operating leases		Finance leases
2019	$	39,358	$	726
2020		27,553		748
2021		20,266		757
2022		11,723		770
2023		9,950		794
Thereafter		7,628		1,148
Total minimum lease payments	$	116,478	$	4,943