UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Marketing	$ 373,638	$ 288,615
Transportation	13,618	13,455
Oil and natural gas	0	1,017
Total revenues	387,256	303,087
Costs and expenses:
Marketing	369,183	285,153
Transportation	12,301	12,162
Oil and natural gas	0	750
General and administrative	2,283	2,637
Depreciation, depletion and amortization	2,412	3,969
Total costs and expenses	386,179	304,671
Operating earnings (losses)	1,077	(1,584)
Other income (expense):
Interest income	387	159
Interest expense	(19)	(1)
Total other income (expense), net	368	158
(Losses) earnings before income taxes	1,445	(1,426)
Income tax benefit (provision)	(307)	566
Net (losses) earnings	$ 1,138	$ (860)
Earnings (losses) per share:
Basic and diluted net (losses) earnings per common share (in dollars per share)	$ 0.27	$ (0.20)
Weighted average number of common shares outstanding (in shares)	4,218	4,218
Dividends per common share (in dollars per share)	$ 0.22	$ 0.22