XML 33 R56.htm IDEA: XBRL DOCUMENT v3.20.1

Stockholders' Equity - Pre-Funded Series D Warrant Exercises - Additional Information (Details) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Stockholders Equity Note [Line Items]
Warrants exercised	11,285	6,536
Pre-Funded Series D Warrants [Member]
Stockholders Equity Note [Line Items]
Warrants exercised		5,379

X

- Definition

The number of each class of warrants or rights exercised during the period.

+ References

No definition available.

+ Details

Name:	dcth_ClassOfWarrantOrRightExercisesInPeriod
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: