XML 52 R42.htm IDEA: XBRL DOCUMENT v3.24.1.u1

Leases - Additional Information (Details) - ft² ft² in Thousands	3 Months Ended
	Mar. 31, 2024	Sep. 30, 2023	Jul. 01, 2012
Maximum [Member]
Lessee, operating lease, remaining lease term	53 months
Minimum [Member]
Lessee, operating lease, remaining lease term	7 months
Seattle [Member]
Area of Land			49,375
Lessee Operating Lease Expired Term	2024-10
Gangnamgu [Member]
Area of Land		28,497
Lessee Operating Sub Lease Expired Term	2028-09
Malta [Member]
Area of Land	4,770
Lessee Operating Lease Expired Term	2024-10

X

- Definition

Lessee Operating Lease Expired Term.

+ References

No definition available.

+ Details

Name:	ddi_LesseeOperatingLeaseExpiredTerm
Namespace Prefix:	ddi_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Lessee Operating Sub Lease Expired Term.

+ References

No definition available.

+ Details

Name:	ddi_LesseeOperatingSubLeaseExpiredTerm
Namespace Prefix:	ddi_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Area of land held.

+ References

No definition available.

+ Details

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

X

- Definition

Remaining lease term of 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)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

+ Details

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

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
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_StatementGeographicalAxis=ddi_SeattleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=ddi_GangnamguMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=country_MT
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: