Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Schedule of future minimum lease payments under noncancelable operating leases

As of December 31, 2015, future minimum lease payments under noncancelable operating leases were as follows (in thousands):

Year
2016	$	22,229
2017	18,774
2018	15,432
2019	12,323
2020	10,806
Thereafter	146,951
	$	226,515

Schedule of future commitments to pay for usage of port facilities, marine consumables, services and maintenance contracts

At December 31, 2015, we have future commitments to pay for our usage of certain port facilities, marine consumables, services and maintenance contracts as follows (in thousands):

Year
2016	$	60,064
2017	60,964
2018	28,437
2019	100,048
2020	28,665
Thereafter	86,556
	$	364,734