Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

During the years ended December 31, 2016 and 2015, the change in the carrying amount of goodwill was as follows (in thousands):

Balance at January 1, 2015	$	20,786
Acquisition of Mid Pac (1)	27,531
Impairment expense	(6,990		)
Balance at December 31, 2015	41,327
Acquisition of Wyoming Refining (1)	64,994
Mid Pac acquisition purchase price allocation adjustment (2)	(589		)
Balance at December 31, 2016	$	105,732

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(1) Please read Note 4—Acquisitions for further discussion.

(2) During 2016, the purchase price allocation was adjusted to record an increase to tax receivables and a decrease to goodwill of $0.6 million. The tax receivable was recorded in connection with a tax refund received by Mid Pac in the first quarter of 2016.

Schedule of Finite-Lived Intangible Assets

Intangible assets consist of the following (in thousands): 

	December 31,
	2016			2015
Intangible assets:
Railcar leases	$	3,249		$	3,249
Trade names and trademarks	6,267			6,267
Customer relationships	32,064			32,064
Total intangible assets	41,580			41,580
Accumulated amortization:
Railcar leases	(2,599		)	(1,950		)
Trade name and trademarks	(4,864		)	(3,540		)
Customer relationships	(4,205		)	(1,722		)
Total accumulated amortization	(11,668		)	(7,212		)
Net:
Railcar leases	650			1,299
Trade name and trademarks	1,403			2,727
Customer relationships	27,859			30,342
Total intangible assets, net	$	29,912		$	34,368

Finite-lived Intangible Assets Amortization Expense

Expected amortization expense for each of the next five years and thereafter is as follows (in thousands):

Year Ended	Amount
2017	$	3,307
2018	2,658
2019	2,658
2020	2,658
2021	2,658
Thereafter	15,973
	$	29,912