COMMITMENTS (Details)	4 Months Ended
Dec. 31, 2020 USD ($) item $ / shares
COMMITMENTS
Maximum number of demands for registration of securities \| item	3
Deferred fee per unit \| $ / shares	$ 0.35
Aggregate deferred underwriter fee payable \| $	$ 8,104,600

The value as of the underwriting compensation deferred in the aggregate if the underwriter's option to purchase additional units is exercised in full.

No definition available.

Name:	dbdr_AggregateDeferredUnderwritingFeePayable
Namespace Prefix:	dbdr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration