XML 70 R59.htm IDEA: XBRL DOCUMENT
v3.25.1

Stockholders' Equity - Employee Stock Purchase Plan (Details) - May 2022 Employee Stock Purchase Plan - shares | 1 Months Ended |
--- | --- | ---
Aug. 31, 2021 | Mar. 31, 2025
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items] |  |
Share-based compensation arrangement by share-based payment award number of shares authorized (in shares) | 260,295 | 148,506
Share-based compensation arrangement by share-based payment award purchase price of common stock (as a percent) | 85.00% |
Employee stock purchase plan, offering period | 6 months |

X
- Definition Share-based Compensation Arrangement By Share-based Payment Award, Stock Plan Offering Period + References No definition available. + Details
Name: | dcth_ShareBasedCompensationArrangementByShareBasedPaymentAwardStockPlanOfferingPeriod
Namespace Prefix: | dcth_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- 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_EmployeeStockOwnershipPlanESOPDisclosuresLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Purchase price of common stock expressed as a percentage of its fair value. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PlanNameAxis=dcth_MayTwoThousandAndTwentyTwoEmployeeStockPurchasePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |