Additional Balance Sheet Detail

6 Months Ended

Jun. 30, 2019

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



	June 30,		December 31,
	2019		2018
Other current assets:
Tubular inventory and well materials	$	3,733	$	4,061
Prepaid expenses	1,000		1,064
	$	4,733	$	5,125
Other assets:
Deferred issuance costs of the Credit Facility	$	4,308	$	2,437
Right-of-use assets – operating leases	3,059		—
Other	45		44
	$	7,412	$	2,481
Accounts payable and accrued liabilities:
Trade accounts payable	$	15,712	$	16,507
Drilling costs	39,831		22,434
Royalties and revenue – related	43,903		51,212
Production, ad valorem and other taxes	5,236		2,418
Compensation – related	3,295		4,489
Interest	673		670
Current operating lease obligations	874		—
Other	2,469		5,970
	$	111,993	$	103,700
Other liabilities:
Asset retirement obligations	$	4,497	$	4,314
Noncurrent operating lease obligations	2,545		—
Defined benefit pension obligations	802		857
Postretirement health care benefit obligations	392		362
	$	8,236	$	5,533