XML 63 R49.htm IDEA: XBRL DOCUMENT
v3.21.1

Accrued Expenses - Schedule of Current Accrued Expenses (Parenthetical) (Details) | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Payables And Accruals [Abstract] |  |
Maximum percentage of current liabilities accrued (in hundredths) | 5.00% | 5.00%

X
- Definition Maximum percentage of various single other accrued expenses to the aggregate current liabilities. + References No definition available. + Details
Name: | dcth_MaximumPercentageOfCurrentLiabilitiesAccrued
Namespace Prefix: | dcth_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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