Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 8,238	$ 29,697
Restricted cash	11,400	21,750
Accounts receivable, net	407,817	408,399
Derivatives	83,940	153,150
Prepaid expenses and other current assets	40,123	37,166
Total current assets	551,518	650,162
Natural gas and oil properties (successful efforts method):
Proved natural gas and oil properties	5,943,495	5,808,908
Unproved natural gas and oil properties	19,172	19,804
Accumulated depletion	(1,426,989)	(1,320,953)
Natural gas and oil properties, net	4,535,678	4,507,759
Property, plant, and equipment, net	458,301	446,022
Operating right of use assets	31,250	3,781
Restricted cash	83,747	93,663
Derivatives	37,558	81,702
Deferred tax assets	312,599	287,135
Other assets	99,028	98,735
Total assets	6,109,679	6,168,959
Current liabilities:
Accounts payable	129,539	81,814
Accrued liabilities	166,485	193,742
Revenue to be distributed	241,194	240,125
Current portion of long-term debt, net	107,140	236,553
Operating lease liabilities	10,955	2,131
Derivatives	137,865	155,959
Derivatives settlements payable	42,816	27,405
Other current liabilities	133,852	137,965
Total current liabilities	969,846	1,075,694
Noncurrent liabilities:
Asset retirement obligations	880,954	863,841
Operating lease liabilities	20,522	1,611
Long-term debt, net	2,823,457	2,715,461
Derivatives	378,526	440,567
Other liabilities	74,799	76,795
Total liabilities	5,148,104	5,173,969
Commitments and contingent liabilities (Note 22)
Stockholders' equity:
Common stock ($0.01 par value; 350,000,000 authorized; 71,388,065 and 76,979,625 shares issued and outstanding)	713	769
Additional paid in capital	1,418,822	1,491,719
Accumulated other comprehensive income (loss)	(583)	(583)
Retained earnings (accumulated deficit)	(468,261)	(507,847)
Total stockholders' equity attributable to DEC	950,691	984,058
Noncontrolling interests	10,884	10,932
Total stockholders' equity	961,575	994,990
Total liabilities and stockholders' equity	$ 6,109,679	$ 6,168,959

Derivative Settlement Payable, Current

No definition available.

Name:	dec_DerivativeSettlementPayableCurrent
Namespace Prefix:	dec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).