XML 41 R28.htm IDEA: XBRL DOCUMENT
v3.21.2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Calculation of basic and diluted - (Details) | 4 Months Ended
--- | ---
Dec. 31, 2020 USD ($) $ / shares shares
Numerator: Earnings allocable to common stock subject to possible redemption |
Interest earned on marketable securities held in Trust Account | $ 22,970
Denominator: Weighted Average Class A common stock subject to possible redemption |
Basic and diluted weighted average shares outstanding | shares | 5,789,000
Basic and diluted net income per share | $ / shares | $ (0.21)
Redeemable Class A Common Stock |
Numerator: Earnings allocable to common stock subject to possible redemption |
Interest earned on marketable securities held in Trust Account | $ 22,970
Unrealized gain on marketable securities held in Trust Account | 919
Less: interest available to be withdrawn for payment of taxes | (23,889)
Net Income / Loss | $ 0
Denominator: Weighted Average Class A common stock subject to possible redemption |
Basic and diluted weighted average shares outstanding | shares | 19,525,316
Basic and diluted net income per share | $ / shares | $ 0.00
Non-Redeemable Common Stock |
Numerator: Earnings allocable to common stock subject to possible redemption |
Net Income / Loss | $ (5,340,678)
Net income allocable to Class A common stock subject to possible redemption | 0
Non-Redeemable Net Loss | $ (5,340,678)
Denominator: Weighted Average Class A common stock subject to possible redemption |
Basic and diluted weighted average shares outstanding | shares | 7,018,311
Basic and diluted net income per share | $ / shares | $ (0.76)

X
- Definition Amount of adjustments to net income (loss) for net earnings attributable to non-redeemable stockholders of the entity. + References No definition available. + Details
Name: | dbdr_AdjustmentForNetIncomeLossAttributableToRedeemableStockholders
Namespace Prefix: | dbdr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | dbdr_DenominatorForCalculationOfEarningsPerShareAbstract
Namespace Prefix: | dbdr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount represents the Interest Available to Withdrawn for Payment of Taxes. + References No definition available. + Details
Name: | dbdr_InterestAvailableToWithdrawnForPaymentOfTaxes
Namespace Prefix: | dbdr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Interest Earned On Marketable Securities Held In Trust Account + References No definition available. + Details
Name: | dbdr_InterestEarnedOnMarketableSecuritiesHeldInTrustAccount
Namespace Prefix: | dbdr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of net earnings attributable to redeemable stockholders of the entity. + References No definition available. + Details
Name: | dbdr_NetEarningsAttributableToRedeemableStockholders
Namespace Prefix: | dbdr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of net income (loss) attributable to non-redeemable stockholders of the entity. + References No definition available. + Details
Name: | dbdr_NetIncomeLossAttributableToNonRedeemableStockholders
Namespace Prefix: | dbdr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | dbdr_NumeratorForCalculationOfEarningsPerShareAbstract
Namespace Prefix: | dbdr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1337-109256 + Details
Name: | us-gaap_EarningsPerShareBasicAndDiluted
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of unrealized gain (loss) on investment in marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_MarketableSecuritiesUnrealizedGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS). + References No definition available. + Details
Name: | us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=dbdr_RedeemableClassCommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=dbdr_NonRedeemableCommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |