Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Rental Payments Under All Non-Cancelable Operating Leases

The future minimum rental payments under all non-cancelable operating leases as of December 31, 2017, were as follows (in thousands):

	Office Space		Transportation Equipment		Terminals and Tanks		Total
2018	$	3,972	$	25,871	$	14,737	$	44,580
2019	3,951		25,209		12,593		41,753
2020	3,984		23,403		8,833		36,220
2021	3,233		17,818		6,545		27,596
2022	2,693		16,317		4,754		23,764
2023 and thereafter	4,696		55,614		55,627		115,937
Total minimum lease obligations	$	22,529	$	164,232	$	103,089	$	289,850

Total Operating Lease Expense

Total operating lease expense from our continuing operations was as follows (in thousands):

Year Ended December 31, 2017	$	36,933
Year Ended December 31, 2016	$	41,906
Year Ended December 31, 2015	$	36,833