Additional Balance Sheet Detail (Tables)

6 Months Ended

Jun. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Components of Selected Balance Sheet Accounts

The following table summarizes components of selected balance sheet accounts as of the dates presented:

	June 30,		December 31,
	2017		2016
Other current assets:
Tubular inventory and well materials	$	2,100	$	2,125
Prepaid expenses	1,000		903
	$	3,100	$	3,028
Other assets:
Deferred issuance costs of the Credit Facility	$	2,887	$	2,785
Other	2,536		2,544
	$	5,423	$	5,329
Accounts payable and accrued liabilities:
Trade accounts payable	$	10,166	$	9,825
Drilling costs	4,802		2,479
Royalties and revenue – related	33,231		26,116
Compensation – related	1,739		2,557
Interest	84		55
Reserve for bankruptcy claims	3,922		3,922
Other	5,319		4,743
	$	59,263	$	49,697
Other liabilities:
Asset retirement obligations (“AROs”)	$	2,506	$	2,459
Defined benefit pension obligations	972		1,025
Postretirement health care benefit obligations	525		488
Other	100		100
	$	4,103	$	4,072