CONSOLIDATED BALANCE SHEET - USD ($) $ in Thousands	Dec. 31, 2016	Jul. 01, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 190,581		$ 10,759	$ 74,488	$ 331,224
Accounts receivable	48,464		48,031
Fair value of derivative contracts	0		38,576
Current income tax receivable	26,086		46,174
Other current assets	10,151		6,881
Total current assets	275,282		150,421
Oil and gas properties, full cost method of accounting:
Proved	9,616,236		9,375,898
Less: accumulated depreciation, depletion and amortization	(9,178,442)		(8,603,955)
Net proved oil and gas properties	437,794		771,943
Unevaluated	373,720		440,043
Other property and equipment, net of accumulated depreciation of $27,418 and $27,424, respectively	26,213		29,289
Other assets, net of accumulated depreciation and amortization of $5,360 and $4,376, respectively	26,474		18,473
Total assets	1,139,483		1,410,169
Current liabilities:
Accounts payable to vendors	19,981		82,207
Undistributed oil and gas proceeds	15,073		5,992
Accrued interest	809		9,022
Asset retirement obligations	88,000		21,291
Current portion of long-term debt	408		0
Other current liabilities	18,602		40,712
Total current liabilities	142,873		159,224
Long-term debt	352,376		1,060,955
Asset retirement obligations	154,019		204,575
Other long-term liabilities	17,315		25,204
Total liabilities not subject to compromise	666,583		1,449,958
Liabilities subject to compromise	1,110,182		0
Total liabilities	1,776,765		1,449,958
Commitments and contingencies
Stockholders’ equity:
Common stock, $.01 par value; authorized 30,000,000 shares; issued 5,610,020 and 5,530,232 shares, respectively	56		55
Treasury stock (1,658 shares, at cost)	(860)		(860)
Additional paid-in capital	1,659,731		1,648,687
Accumulated deficit	(2,296,209)		(1,705,623)
Accumulated other comprehensive income	0		17,952
Total stockholders’ equity	(637,282)	$ 50,000	(39,789)
Total liabilities and stockholders’ equity	$ 1,139,483		$ 1,410,169