Fresh-Start Accounting - Schedule of Fresh Start Adjustments to the Balance Sheet (Details) $ in Thousands	Nov. 30, 2020 USD ($)
Current assets
Cash and cash equivalents	$ 40,565
Restricted Cash	2,157
Accounts receivable, oil, natural gas liquid and natural gas sales	10,354
Accounts receivable, joint interest owners and other, net	1,458
Derivative financial instruments	916
Prepaid expenses and other	8,403
Total current assets	63,853
Property and equipment
Oil and gas properties, proved properties	1,100,211
Oil and gas properties, unproved properties	77,382
Other property and equipment	21,862
Less accumulated depreciation, depletion, amortization and impairment	(734,231)
Property and equipment, net	465,224
Accounts receivable	6,053
Derivative financial instruments	216
Other non-current assets	209
Total assets	535,555
Current liabilities
Accounts payable	8,606
Oil, natural gas liquid and natural gas sales payable	17,507
Accrued liabilities	8,972
Derivative financial instruments	4,321
Current maturities of long-term debt	286,759
Total current liabilities	326,165
Long-term liabilities
Long-term debt	8,991
Asset retirement obligations	7,327
Derivative financial instruments	485
Other non-current liabilities	(10)
Total long-term liabilities	16,793
Liabilities subject to compromise	271,110
Total liabilities	614,068
Stockholders’ equity
Common stock	142,655
Additional paid-in capital	176,012
Accumulated deficit	(397,180)
Total stockholders’ equity	(78,513)
Total liabilities and stockholders’ equity	535,555
Current assets
Cash and cash equivalents	9,813
Restricted Cash	8,972
Accounts receivable, oil, natural gas liquid and natural gas sales	10,354
Accounts receivable, joint interest owners and other, net	1,458
Derivative financial instruments	916
Prepaid expenses and other	8,503
Total current assets	40,016
Property and equipment
Property and equipment	313,972
Oil and gas properties, unproved properties	34,925
Other property and equipment	19,674
Property and equipment, net	368,571
Accounts receivable	6,053
Derivative financial instruments	216
Other non-current assets	4,747
Total assets	419,603
Current liabilities
Accounts payable	6,708
Oil, natural gas liquid and natural gas sales payable	17,507
Accrued liabilities	12,923
Derivative financial instruments	4,321
Current maturities of long-term debt	22,157
Current liabilities (excluding current portion of long-term debt)	63,616
Long-term liabilities
Long-term debt	258,191
Asset retirement obligations	4,358
Derivative financial instruments	485
Other non-current liabilities	(10)
Total long-term liabilities	263,024
Total liabilities	326,640
Stockholders’ equity
Common stock	10
Additional paid-in capital	92,953
Total stockholders’ equity	92,963
Total liabilities and stockholders’ equity	419,603
Reorganization Adjustments
Long-term liabilities
Liabilities subject to compromise	271,131
Fresh-Start Adjustment, Increase (Decrease), Current Assets [Abstract]
Cash and cash equivalents	(30,752)
Restricted Cash	6,815
Prepaid expenses and other	100
Total current assets	(23,837)
Property and equipment
Other non-current assets	4,538
Total assets	(19,299)
Fresh-Start Adjustment, Increase (Decrease), Current Liabilities [Abstract]
Accounts payable	(1,898)
Accrued liabilities	3,951
Current maturities of long-term debt	(264,602)
Total current liabilities	(262,549)
Long-term liabilities
Fresh-Start Adjustment, Increase (Decrease), Long-term Debt	249,602
Total long-term liabilities	249,602
Liabilities subject to compromise	(271,110)
Total liabilities	(284,057)
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract]
Accumulated deficit	175,470
Total stockholders’ equity	264,758
Total liabilities and stockholders’ equity	(19,299)
Reorganization Adjustments - Predecessor
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract]
Common stock	(142,655)
Additional paid-in capital	138,980
Reorganization Adjustments - Successor
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract]
Common stock	10
Additional paid-in capital	92,953
Fresh Start Adjustments
Property and equipment
Oil and gas properties, proved properties	(786,239)
Oil and gas properties, unproved properties	(42,457)
Other property and equipment	(2,188)
Less accumulated depreciation, depletion, amortization and impairment	734,231
Property and equipment, net	(96,653)
Total assets	(96,653)
Long-term liabilities
Fresh-Start Adjustment, Increase (Decrease), Long-term Debt	(402)
Asset retirement obligations	(2,969)
Total long-term liabilities	(3,371)
Total liabilities	(3,371)
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract]
Additional paid-in capital	(314,992)
Accumulated deficit	221,710
Total stockholders’ equity	(93,282)
Total liabilities and stockholders’ equity	$ (96,653)