XML 48 R36.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Summary of Significant Accounting Policies - Additional Information (Details) |  |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 21, 2016 | Jul. 19, 2016 | Jun. 13, 2016 USD ($) | Jun. 06, 2016 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2016 USD ($) Segment | Jun. 30, 2016 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Maximum period of investments with original maturities from date of acquisition to be cash equivalents |  |  |  |  |  | 3 months |
Reverse stock split ratio | 0.0625 |  |  |  |  |  |
Number of business segments | Segment |  |  |  |  |  | 1 |
Minimum [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  |  | 3 years |
Reverse stock split ratio |  | 0.1 |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  |  | 7 years |
Reverse stock split ratio |  | 0.05 |  |  |  |  |
Senior Secured Convertible Notes [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Debt instrument, principal face amount |  |  | $ 35,000,000 |  | $ 34,351,000 | $ 34,351,000 |
Senior Secured Convertible Notes [Member] | Series C Warrants [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Debt instrument, principal face amount |  |  |  |  |  |  | $ 35,000,000
Senior Secured Convertible Notes [Member] | Securities Purchase Agreement [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Debt instrument, principal face amount |  |  | 35,000,000 | $ 35,000,000 |  |  |
Proceeds from issuance of notes available for general corporate purposes |  |  | 3,000,000 | 3,000,000 | 3,000,000 |  |
Cash proceeds from notes held |  |  | 29,200,000 |  | 26,200,000 | 26,200,000 |
Senior Secured Convertible Notes [Member] | Securities Purchase Agreement [Member] | First Release Date on December 29, 2016 [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Cash proceeds from notes held |  |  | 3,000,000 |  |  |  |
Senior Secured Convertible Notes [Member] | Securities Purchase Agreement [Member] | Subsequent Release Dates Beginning in February 2017 [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Cash proceeds from notes held |  |  | 26,200,000 |  | $ 26,200,000 | $ 26,200,000 |
Senior Secured Convertible Notes [Member] | Securities Purchase Agreement [Member] | Series C Warrants [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Proceeds from issuance of notes |  |  | $ 32,200,000 | $ 32,200,000 |  |  |

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 Proceeds from issuance of notes and warrants. + References No definition available. + Details
Name: | dcth_ProceedsFromIssuanceOfNotesAndWarrants
Namespace Prefix: | dcth_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds from issuance of notes available for use. + References No definition available. + Details
Name: | dcth_ProceedsFromIssuanceOfNotesAvailableForUse
Namespace Prefix: | dcth_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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 Carrying amount as of the balance sheet date of cash collateral held for borrowed securities, for which the cash is restricted as to withdrawal or usage. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.1) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),2) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_CashCollateralForBorrowedSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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
- Definition Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Stock Split -URI http://asc.fasb.org/extlink&oid=6525746 + Details
Name: | us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=dcth_SeniorSecuredConvertibleNoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_TransactionTypeAxis=dcth_SecuritiesPurchaseAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=dcth_ConversionConditionOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=dcth_ConversionConditionTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |