Debtor Reorganization Items, Accrued Service Provider Fees

No definition available.

Name:	den_DebtorReorganizationItemsAccruedServiceProviderFees
Namespace Prefix:	den_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debtor Reorganization Items, increase (cecrease) to accounts payable and accrued liabilities related to payment of accrued interest and fees on DIP facility

+ References

No definition available.

+ Details

Name:	den_DebtorReorganizationItemsIncreaseDecreaseToAPAndAccruedsForAccruedInterestAndFeesDIP
Namespace Prefix:	den_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of accounts payable and accrued liabilities reinstated that were previously included in liabilities subject to compromise.

+ References

No definition available.

+ Details

Name:	den_LiabilitiesSubjectToCompromiseReinstateAccountsPayableAndAccruedLiabilities
Namespace Prefix:	den_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

+ 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 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent
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:	us-gaap_FreshStartAdjustmentsTypeOfFreshStartAdjustmentAxis=us-gaap_ReorganizationChapter11PlanEffectAdjustmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Fresh Start Accounting (Accounts Payable and Accrued Liabilities) (Details 5) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Sep. 18, 2020
Fresh-Start Adjustment [Line Items]
Total	$ 191,598	$ 112,671	$ 174,320
Accrual of professional service provider fees			2,826
Payment of accrued interest and fees on DIP Facility			(1,464)
Reinstatement of accounts payable and accrued liabilities from liabilities subject to compromise			101,431
Reorganization Adjustments
Fresh-Start Adjustment [Line Items]
Total			$ 102,793