Fresh Start Accounting - Schedule of Fresh Start Adjustments to Balance Sheet (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Apr. 24, 2021	Apr. 23, 2021	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 63,041	$ 38,388		$ 79,982
Restricted cash	34,293	24,341		35,447
Accounts receivable	177,675	151,917		134,906
Less: allowance for credit losses	(5,622)	(5,582)		(5,555)
Accounts receivable, net	172,053	146,335		129,351
Prepaid expenses and other current assets	48,695	61,440		58,655
Assets held for sale	0	1,000		1,000
Total current assets	318,082	271,504		304,435
Drilling and other property and equipment, net of accumulated depreciation	1,141,908	1,175,895		1,354,650
Other assets	67,966	84,041		57,047
Deferred tax asset				6,716
Total assets	1,527,956	1,531,440		1,722,848
Current liabilities:
Accounts payable	47,647	38,661		65,401
Accrued liabilities	166,785	143,736		123,055
Current finance lease liabilities	16,965	15,865		15,148
Taxes payable	30,264	34,500		22,034
Total current liabilities	261,661	232,762		225,638
Deferred tax liability	700	1,626
Other liabilities	93,888	114,748		117,499
Noncurrent finance lease liabilities	131,393	148,358		158,919
Long-term debt	360,644	266,241		285,982
Total liabilities not subject to compromise				788,038
Stockholders’ equity:
Predecessor or Successor preferred stock	0	0		0
Predecessor or Successor common stock	10	10
Predecessor treasury stock, at cost	(4,252)	0
Successor additional paid-in capital				934,800
Accumulated deficit	(280,555)	(177,344)
Total stockholders’ equity	679,670	767,705	$ 934,810	934,810	$ 1,982,566	$ 3,232,210
Total liabilities and stockholders’ equity	$ 1,527,956	1,531,440		1,722,848
Fresh Start Adjustments
Current assets:
Accounts receivable				802
Accounts receivable, net				802
Prepaid expenses and other current assets				(34,455)
Total current assets				(33,653)
Drilling and other property and equipment, net of accumulated depreciation				(2,720,485)
Other assets				(10,282)
Deferred tax asset				6,716
Total assets				(2,757,704)
Current liabilities:
Accrued liabilities				(55,961)
Total current liabilities				(55,961)
Deferred tax liability				(34,447)
Deferred tax asset, reclassification				7,518
Other liabilities				(9,837)
Total liabilities not subject to compromise				(92,727)
Stockholders’ equity:
Predecessor or Successor preferred stock				0
Accumulated deficit				(2,664,977)
Total stockholders’ equity				(2,664,977)
Total liabilities and stockholders’ equity				(2,757,704)
Preferred Stock [Member]
Stockholders’ equity:
Predecessor or Successor preferred stock				0
Preferred Stock [Member] | Fresh Start Adjustments
Stockholders’ equity:
Predecessor or Successor preferred stock				0
Common Stock [Member]
Stockholders’ equity:
Predecessor or Successor common stock				10
Total stockholders’ equity		$ 10	$ 10		$ 1,453	$ 1,448
Previously Reported | Reorganization, Chapter 11, Predecessor, before Adjustment
Current assets:
Cash and cash equivalents				333,699
Restricted cash				3,274
Accounts receivable				134,104
Less: allowance for credit losses				(5,555)
Accounts receivable, net				128,549
Prepaid expenses and other current assets				108,594
Assets held for sale				1,000
Total current assets				575,116
Drilling and other property and equipment, net of accumulated depreciation				3,892,150
Other assets				179,783
Total assets				4,647,049
Current liabilities:
Accounts payable				66,397
Accrued liabilities				246,141
Short-term debt				442,034
Taxes payable				22,034
Total current liabilities				776,606
Deferred tax liability				23,060
Other liabilities				217,434
Total liabilities not subject to compromise				1,017,100
Liabilities subject to compromise				2,044,877
Stockholders’ equity:
Predecessor or Successor preferred stock				0
Predecessor or Successor common stock				1,453
Predecessor additional paid-in capital				2,029,978
Predecessor treasury stock, at cost				(206,163)
Accumulated deficit				(240,196)
Total stockholders’ equity				1,585,072
Total liabilities and stockholders’ equity				4,647,049
Previously Reported | Preferred Stock [Member] | Reorganization, Chapter 11, Predecessor, before Adjustment
Stockholders’ equity:
Predecessor or Successor preferred stock				0
Reorganization Adjustments | Reorganization, Chapter 11, Predecessor, before Adjustment
Current assets:
Cash and cash equivalents				(253,717)
Restricted cash				32,173
Prepaid expenses and other current assets				(15,484)
Total current assets				(237,028)
Drilling and other property and equipment, net of accumulated depreciation				182,985
Other assets				(112,454)
Total assets				(166,497)
Current liabilities:
Accounts payable				(996)
Accrued liabilities				(67,125)
Short-term debt				(442,034)
Current finance lease liabilities				15,148
Total current liabilities				(495,007)
Deferred tax liability				3,869
Other liabilities				(90,098)
Noncurrent finance lease liabilities				158,919
Long-term debt				285,982
Total liabilities not subject to compromise				(136,335)
Liabilities subject to compromise				(2,044,877)
Stockholders’ equity:
Predecessor or Successor preferred stock				0
Predecessor or Successor common stock				(1,453)
Predecessor additional paid-in capital				(2,029,978)
Predecessor treasury stock, at cost				206,163
Successor additional paid-in capital				934,800
Accumulated deficit				2,905,173
Total stockholders’ equity				2,014,715
Total liabilities and stockholders’ equity				(166,497)
Reorganization Adjustments | Preferred Stock [Member] | Reorganization, Chapter 11, Predecessor, before Adjustment
Stockholders’ equity:
Predecessor or Successor preferred stock				0
Reorganization Adjustments | Common Stock [Member] | Reorganization, Chapter 11, Predecessor, before Adjustment
Stockholders’ equity:
Predecessor or Successor common stock				$ 10