Fresh Start Accounting (Schedule of Adjustments Set Forth in the Statement of Financial Position) (Detail) $ in Thousands	Feb. 08, 2019 USD ($)
Current assets:
Cash and cash equivalents	$ 23,073
Restricted cash	5,675
Revenue receivable	13,704
Joint interest billing receivable	6,908
Deposit for surety bonds	3,550
Other current assets	924
Total current assets	53,834
Oil and gas properties, full cost method	52,070
Unevaluated oil and gas properties	118,693
Accumulated depreciation, depletion, and amortization	0
Oil and gas properties, net	170,763
Other property and equipment	250
Accumulated depreciation of other property and equipment	0
Total property and equipment	171,013
Other assets	4,053
Total Assets	228,900
Current liabilities:
Accounts payable to vendors	17,388
Advances from co-owners	3,363
Oil and gas revenue payable	16,059
Accrued interest	0
Asset retirement obligation	183
Right of use liability-short-term	1,080
Other accrued liabilities	1,685
Total current liabilities	39,758
Multi-draw Term Loan	45,269
10% Senior Secured PIK Notes due 2024	65,025
Asset retirement obligation	2,303
Right of use liability-long-term	2,604
Deferred tax liability	241
Total liabilities not subject to compromise	155,200
Liabilities subject to compromise	0
Stockholder's equity:
Common stock (Successor)	94
Paid-in capital (Successor)	73,606
Accumulated deficit	0
Total stockholder's equity	73,700
Total liabilities and stockholders’ equity	228,900
Fresh Start Adjustments
Fresh-Start Adjustment, Assets
Oil and gas properties, full cost method	(1,314,814)
Unevaluated oil and gas properties	94,660
Accumulated depreciation, depletion, and amortization	1,303,376
Oil and gas properties, net	83,222
Other property and equipment	(9,068)
Accumulated depreciation of other property and equipment	9,068
Total property and equipment	83,222
Other assets	(98)
Total Assets	83,124
Fresh-Start Adjustment, Liabilities and Stockholders' Equity
Multi-draw Term Loan	(4,731)
10% Senior Secured PIK Notes due 2024	(14,975)
Deferred tax liability	241
Total liabilities not subject to compromise	(19,465)
Liabilities subject to compromise	0
Accumulated deficit	102,589
Total stockholder's equity	102,589
Total liabilities and stockholders’ equity	83,124
Predecessor Company
Current assets:
Cash and cash equivalents	31,881
Restricted cash	389
Revenue receivable	13,704
Joint interest billing receivable	6,908
Deposit for surety bonds	3,550
Other current assets	924
Total current assets	57,356
Oil and gas properties, full cost method	1,366,884
Unevaluated oil and gas properties	24,033
Accumulated depreciation, depletion, and amortization	(1,303,376)
Oil and gas properties, net	87,541
Other property and equipment	9,318
Accumulated depreciation of other property and equipment	(9,068)
Total property and equipment	87,791
Other assets	4,151
Total Assets	149,298
Current liabilities:
Accounts payable to vendors	14,813
Advances from co-owners	3,363
Oil and gas revenue payable	16,059
Total current liabilities	1,181
Asset retirement obligation	183
Right of use liability-short-term	1,080
Other accrued liabilities	1,224
Total current liabilities	37,903
Multi-draw Term Loan	49,754
10% Senior Secured PIK Notes due 2024	0
Asset retirement obligation	2,303
Right of use liability-long-term	2,604
Deferred tax liability	0
Total liabilities not subject to compromise	92,564
Liabilities subject to compromise	321,495
Stockholder's equity:
Preferred stock (Predecessor)	1
Common stock (Predecessor)	26
Paid-in capital (Predecessor)	314,312
Accumulated deficit	(579,100)
Total stockholder's equity	(264,761)
Total liabilities and stockholders’ equity	149,298
Reorganization Adjustments
Current assets:
Cash and cash equivalents	(8,808)
Restricted cash	5,286
Total current assets	(3,522)
Other assets	0
Total Assets	(3,522)
Current liabilities:
Accounts payable to vendors	2,575
Advances from co-owners	0
Total current liabilities	(1,181)
Asset retirement obligation	0
Other accrued liabilities	461
Total current liabilities	1,855
Multi-draw Term Loan	246
10% Senior Secured PIK Notes due 2024	80,000
Total liabilities not subject to compromise	82,101
Liabilities subject to compromise	(321,495)
Stockholder's equity:
Preferred stock (Predecessor)	(1)
Common stock (Predecessor)	(26)
Paid-in capital (Predecessor)	(314,312)
Accumulated deficit	476,511
Total stockholder's equity	235,872
Total liabilities and stockholders’ equity	(3,522)
Stockholder's equity:
Common stock (Successor)	94
Paid-in capital (Successor)	73,606
Total stockholder's equity	$ 73,700