XML 61 R39.htm IDEA: XBRL DOCUMENT
v3.19.2

Summary of Significant Accounting Policies - Additional Information (Details) shares in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 Derivative Segment shares | Dec. 31, 2017 Derivative
Summary Of Significant Accounting Policies [Line Items] |  |
Maximum period of investments with original maturities from date of acquisition to be cash equivalents | 3 months |
Pre-funded penny warrants outstanding | shares | 61.3 |
Number of business segments | Segment | 1 |
Designated as Hedges [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Number of derivative instruments | Derivative | 0 | 0
Minimum [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Estimated useful lives | 3 years |
Maximum [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Estimated useful lives | 7 years |

X
- Definition The entity considers investments with original maturities of certain months or less at the date of acquisition to be cash equivalents. + References No definition available. + Details
Name: | dcth_MaximumPeriodOfInvestmentsWithOriginalMaturitiesFromDateOfAcquisitionToBeCashEquivalents
Namespace Prefix: | dcth_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares pre-funded penny warrants outstanding. + References No definition available. + Details
Name: | dcth_NumberOfSharesPreFundedPennyWarrantsOutstanding
Namespace Prefix: | dcth_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Summary of significant accounting policies. + References No definition available. + Details
Name: | dcth_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix: | dcth_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of derivative instruments of a particular group held by the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959 + Details
Name: | us-gaap_DerivativeNumberOfInstrumentsHeld
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
Name: | us-gaap_NumberOfOperatingSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |