General Accounting and Disclosure Matters (Tables)

6 Months Ended

Jun. 30, 2017

Accounting Policies [Abstract]

Components of prepayments

The components of prepayments and other current assets are as follows at the dates indicated (in thousands):

	June 30,		December 31,
	2017		2016
Insurance premiums	$	679	$	1,403
Rents, license and other	529		694
Total	$	1,208	$	2,097

Reporting revenue of crude oil contracts on a gross revenue basis

Reporting such crude oil contracts on a gross revenue basis would increase our reported revenues as follows for the periods indicated (in thousands):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2017		2016		2017		2016
Revenue gross-up	$	44,908	$	99,082	$	102,473	$	175,009