Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015
OPERATING ACTIVITIES:
Net loss	$ (38,768)	$ (168,345)
Adjustments to reconcile net loss to cash provided by operating activities:
Depletion, depreciation and amortization	59,642	86,146
Impairment of oil and gas properties		220,197
Amortization of debt issuance costs	1,058	1,178
Write-off of debt issuance costs	563
Gain on debt extinguishment		(1,483)
Unrealized loss on commodity derivatives	8,273	22,929
Exploration expense	3,109	1,626
Share-based compensation expense	4,281	6,000
Deferred income tax benefit	(20,847)	(93,121)
Other non-cash items	(91)	53
Changes in operating assets and liabilities:
Accounts receivable	3,713	4,851
Prepaid expenses and other current assets	137	(240)
Accounts payable	(1,070)	(216)
Oil, NGL and gas sales payable	(74)	(3,925)
Accrued liabilities	(32)	6,970
Cash provided by operating activities	19,894	82,620
INVESTING ACTIVITIES:
Additions to oil and gas properties	(17,299)	(151,226)
Additions to furniture, fixtures and equipment, net	(15)	(74)
Change in working capital related to investing activities	(1,527)	(55,915)
Cash used in investing activities	(18,841)	(207,215)
FINANCING ACTIVITIES:
Borrowings under credit facility	40,600	241,500
Repayment of amounts outstanding under credit facility	(38,600)	(113,500)
Tax withholdings related to restricted stock	(17)	(105)
Extinguishment of senior notes		(3,413)
Debt issuance costs	(197)
Change in working capital related to financing activities	(731)
Cash provided by financing activities	1,055	124,482
CHANGE IN CASH AND CASH EQUIVALENTS	2,108	(113)
CASH AND CASH EQUIVALENTS, beginning of period	600	432
CASH AND CASH EQUIVALENTS, end of period	2,708	319
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid for interest	15,235	13,216
SUPPLEMENTAL DISCLOSURE OF NON-CASH TRANSACTION:
Asset retirement obligations capitalized	$ 35	$ 151

Non-cash exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. (v) Costs of drilling exploratory-type stratigraphic test wells.

No definition available.