XML 45 R32.htm IDEA: XBRL DOCUMENT
v3.25.1

Repurchase Agreements - Narrative (Details) $ in Thousands | Mar. 31, 2025 USD ($) counterparty | Dec. 31, 2024 USD ($)
--- | --- | ---
Disclosure of Repurchase Agreements [Abstract] |  |
Number of counterparties | counterparty | 27 |
Due to counterparties | $ | $ 332,676 | $ 341,924

X
- Definition Number of lending counterparties with whom the Company has amounts outstanding as of reporting period. + References No definition available. + Details
Name: | dx_NumberOfCounterpartiesBorrowingsOutstanding
Namespace Prefix: | dx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfRepurchaseAgreementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of other payables due to broker-dealers or clearing organizations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 940 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481833/940-20-45-3 + Details
Name: | us-gaap_OtherPayablesToBrokerDealersAndClearingOrganizations
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant