XML 58 R47.htm IDEA: XBRL DOCUMENT
v3.19.2

Stockholders' Equity - Common Stock Issuances - Additional Information (Details) shares in Millions | 6 Months Ended
--- | ---
Jun. 30, 2019 shares
Pre-Funded Series D Warrants [Member] |
Stockholders Equity Note [Line Items] |
Exercise of pre-funded Series D Warrants (in shares) | 7.9

X
- Definition Stock issued during period, shares, Exercise of pre-funded warrants. + References No definition available. + Details
Name: | dcth_StockIssuedDuringPeriodSharesExerciseOfPreFundedWarrants
Namespace Prefix: | dcth_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Stockholders equity note. + References No definition available. + Details
Name: | dcth_StockholdersEquityNoteLineItems
Namespace Prefix: | dcth_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=dcth_PreFundedSeriesDWarrantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |