XML 62 R50.htm IDEA: XBRL DOCUMENT v3.21.2

Stockholders' Equity - Summary of Stock Option Shares Outstanding and Exercisable (Details) - shares	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding Number of Options	1,698,249	1,078,499
Weighted Average Remaining Contractual Term (Years), Exercisable	9 years 2 months 12 days
Number of Shares, Exercisable	443,729
$9.85 - $10.99 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding Number of Options	621,750
Weighted Average Remaining Contractual Term (Years), Exercisable	9 years 10 months 24 days
Number of Shares, Exercisable	94,445
$11.00 - $14.99 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding Number of Options	944,000
Weighted Average Remaining Contractual Term (Years), Exercisable	9 years
Number of Shares, Exercisable	314,785
$15.00 - $24.99 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding Number of Options	132,000
Weighted Average Remaining Contractual Term (Years), Exercisable	9 years
Number of Shares, Exercisable	34,000
$25.00 + [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding Number of Options	499
Weighted Average Remaining Contractual Term (Years), Exercisable	7 years 3 months 18 days
Number of Shares, Exercisable	499

X

- 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

No definition available.

+ Details

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

X

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=dcth_ExercisePriceRangeFromNinePointEightFiveToTenPointNineNineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=dcth_ExercisePriceRangeFromElevenPointZeroZeroToFourteenPointNineNineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=dcth_ExercisePriceRangeFromFifteenPointZeroZeroToTwentyFourPointNineNineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=dcth_ExercisePriceRangeAboveTwentyFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: