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Nature of Business and Summary of Significant Accounting Policies - Insurance (Details) (Accrued expenses, USD $) In Thousands, unless otherwise specified | Apr. 26, 2014 | Apr. 27, 2013
--- | --- | ---
Accrued expenses |  |
Self-insurance liability | $ 1,656 | $ 1,843

X
- Definition Self Insurance Liability + References No definition available. + Details
Name: | dakt_SelfInsuranceLiability
Namespace Prefix: | dakt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant