Lessee, Operating Lease, Monthly Base Rent

No definition available.

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Namespace Prefix:	dcth_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	instant

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

+ Details

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

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of short-term lease cost, excluding expense for lease with term of one month or less.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 53
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479589/842-20-55-53

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-4

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	dcth_LeaseArrangementAxis=dcth_SubLease2021Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dcth_LeaseArrangementAxis=dcth_SubLease2016Member
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Period Type:

Leases - Additional Information (Details) $ in Millions		12 Months Ended
Leases - Additional Information (Details) $ in Millions	Jun. 25, 2020 $ / ft²	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 22, 2020 ft²
Lessee Lease Description [Line Items]
Short-term lease, cost \| $		$ 0.2	$ 0.1
2021 Sub-Lease
Lessee Lease Description [Line Items]
Monthly base rent (in USD per sq ft) \| $ / ft²	3,700
Lease term	5 years
2016 Sub-Lease
Lessee Lease Description [Line Items]
Area of space \| ft²				6,877