CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
CURRENT ASSETS:
Cash and cash equivalents	$ 76,838
Accounts receivable:
Oil and gas sales	36,988
Joint interest billing	4,281
Other	2,456
Other current assets	3,326
Total current assets	123,889
PROPERTY AND EQUIPMENT:
Proved properties	573,150
Unproved properties not being amortized	65,080
Other property and equipment	6,339
Less accumulated depreciation, depletion, amortization and impairment	(12,974)
Net property and equipment	631,595
OTHER NONCURRENT ASSETS	5,455
TOTAL	760,939
CURRENT LIABILITIES:
Accounts payable	2,521
Accrued liabilities	53,731
Total current liabilities	56,252
LONG-TERM LIABILITIES:
Asset retirement obligations	14,200
Long-term debt	128,059
Other long-term liabilities	614
Total long-term liabilities	142,873
COMMITMENTS AND CONTINGENCIES (Note 16)
STOCKHOLDERS' EQUITY (DEFICIT):
Preferred stock
Warrants	37,329
Common stock	250
Additional paid-in-capital	514,305
Retained earnings (deficit)	9,930
Total stockholders' equity (deficit)	561,814
TOTAL	760,939
Predecessor
CURRENT ASSETS:
Cash and cash equivalents		$ 81,093
Accounts receivable:
Oil and gas sales		33,656
Joint interest billing		12,503
Other		17,506
Other current assets		1,044
Total current assets		145,802
PROPERTY AND EQUIPMENT:
Proved properties		3,666,403
Other property and equipment		14,798
Less accumulated depreciation, depletion, amortization and impairment		(3,157,332)
Net property and equipment		523,869
OTHER NONCURRENT ASSETS		9,496
TOTAL		679,167
CURRENT LIABILITIES:
Accounts payable		1,904
Accrued liabilities		91,712
Debt classified as current less unamortized debt issuance costs		1,890,944
Total current liabilities		1,984,560
LONG-TERM LIABILITIES:
Asset retirement obligations		18,708
Other long-term liabilities		1,965
Total long-term liabilities		20,673
COMMITMENTS AND CONTINGENCIES (Note 16)
STOCKHOLDERS' EQUITY (DEFICIT):
Preferred stock
Common stock		110
Treasury stock		(3,081)
Additional paid-in-capital		888,247
Retained earnings (deficit)		(2,211,342)
Total stockholders' equity (deficit)		(1,326,066)
TOTAL		679,167
Predecessor | Preferred Stock
STOCKHOLDERS' EQUITY (DEFICIT):
Preferred stock
Predecessor | Series A Preferred Stock
STOCKHOLDERS' EQUITY (DEFICIT):
Preferred stock