Operating Leases (Tables)

12 Months Ended

Dec. 31, 2015

Leases, Operating [Abstract]

Future Rental Commitments Over the Next Five Years Under Non-cancelable Operating Leases

A summary of future rental commitments over the next five years under non-cancelable operating leases follows (in thousands):

Years Ending December 31,
2016	$	12,154	(a)
2017	9,156
2018	9,005
2019	8,973
2020	9,209
Total	$	48,497

^(a)  Includes $2.7 million of vessel leases for 2016.