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v3.19.3

Restricted Cash | 6 Months Ended | 12 Months Ended
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Jun. 30, 2019 | Dec. 31, 2018
Restricted Cash [Abstract] |  |
Restricted Cash |
(2) | RESTRICTED CASH
Cash and cash equivalents that are restricted as to withdrawal or use under the terms of certain contractual agreements are recorded in Restricted Cash on the balance sheets. Restricted cash does not include required minimum balances. Cash, cash equivalents, and restricted cash balances were as follows:
(in thousands) |  | June 30, 2019 |  |  | December 31, 2018 |
Cash and cash equivalents |  | $ | 352 |  |  | $ | 2,516 |
Letters of credit |  |  | 1,012 |  |  |  | 1,012 |
Security for credit cards |  |  | 50 |  |  |  | 50 |
Total cash, cash equivalents and restricted cash shown in the statements of cash flows |  | $ | 1,414 |  |  | $ | 3,578 |
(4) | RESTRICTED CASH
Cash and cash equivalents that are restricted as to withdrawal or use under the terms of certain contractual agreements are recorded in Restricted Cash on the balance sheet. Restricted cash does not include required minimum balances.
(in thousands) |  | December 31, 2018 |  |  | December 31, 2017 |
Cash and cash equivalents |  | $ | 2,516 |  |  | $ | 3,999 |
Convertible Notes |  |  | — |  |  |  | 238 |
Letters of credit |  |  | 1,012 |  |  |  | 1,012 |
Security for credit cards |  |  | 50 |  |  |  | 75 |
Total cash, cash equivalents and restricted cash shown in the statement of cash flows |  | $ | 3,578 |  |  | $ | 5,324 |

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- Definition Restricted cash disclosure. + References No definition available. + Details
Name: | dcth_RestrictedCashDisclosureTextBlock
Namespace Prefix: | dcth_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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