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Note 2 - Revenue Recognition 1 (Details Textual) $ in Thousands | 12 Months Ended
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May 01, 2021 USD ($)
Contract With Customer, Liability, Revenue Recognized During Period | $ 46,533
Revenue, Remaining Performance Obligation, Amount | 303,535
Product [Member] |
Revenue, Remaining Performance Obligation, Amount | 250,736
Service [Member] |
Revenue, Remaining Performance Obligation, Amount | $ 52,799

X
- Definition Amount of revenue recognized during period including amounts previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.) + References No definition available. + Details
Name: | dakt_ContractWithCustomerLiabilityRevenueRecognizedDuringPeriod
Namespace Prefix: | dakt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045 + Details
Name: | us-gaap_RevenueRemainingPerformanceObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | srt_ProductOrServiceAxis=us-gaap_ProductMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_ServiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |