Preconfirmation change in successor common stock and additional paid-in capital.

No definition available.

Name:	ck0000949039_PreconfirmationChangeInSuccessorCommonStockAndAdditionalPaidInCapital
Namespace Prefix:	ck0000949039_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Preconfirmation fair value of common shares issued to holders of senior notes claims.

+ References

No definition available.

+ Details

Name:	ck0000949039_PreconfirmationFairValueOfCommonSharesIssuedToHoldersOfSeniorNotesClaims
Namespace Prefix:	ck0000949039_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Preconfirmation fair value of emergence warrants issued to predecessor equity holders.

+ References

No definition available.

+ Details

Name:	ck0000949039_PreconfirmationFairValueOfEmergenceWarrantsIssuedToPredecessorEquityHolders
Namespace Prefix:	ck0000949039_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30)(a)(1))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_AdditionalPaidInCapitalCommonStock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_CommonStockValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ReorganizationChapter11LineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_RestatementAxis=srt_RestatementAdjustmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FreshStartAdjustmentsTypeOfFreshStartAdjustmentAxis=us-gaap_ReorganizationChapter11PredecessorBeforeAdjustmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Fresh Start Accounting - Schedule of Reconciles Reorganization Adjustments Made to Successor's Common Stock and Successor's Additional Paid-in Capital (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Apr. 23, 2021
Reorganization, Chapter 11 [Line Items]
Less: Par value of Successor common stock	$ (10)	$ (10)
Successor additional paid-in capital	$ 964,467	$ 945,039
Reorganization Adjustments \| Reorganization, Chapter 11, Predecessor, before Adjustment
Reorganization, Chapter 11 [Line Items]
Fair value of New Diamond Common Shares issued to holders of Senior Notes Claims			$ 914,236
Fair value of Emergence Warrants issued to Predecessor equity holders			20,574
Total change in Successor common stock and additional paid-in capital			934,810
Less: Par value of Successor common stock			1,453
Successor additional paid-in capital			934,800
Common Stock [Member]
Reorganization, Chapter 11 [Line Items]
Less: Par value of Successor common stock			(10)
Common Stock [Member] \| Reorganization Adjustments \| Reorganization, Chapter 11, Predecessor, before Adjustment
Reorganization, Chapter 11 [Line Items]
Less: Par value of Successor common stock			$ (10)