XML 60 R43.htm IDEA: XBRL DOCUMENT v3.7.0.1

Nature of Business and Summary of Significant Accounting Policies Revenue Recognition (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 29, 2017	Apr. 30, 2016	May 02, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Sales returns, reserve	$ 42	$ 93
Deferred revenue period for recognition of product maintenance contracts	10 years
Percentage of net sales from services	10.50%	9.70%	8.20%

X

- Definition

Revenue Recognition, Period of Deferred Revenue Recognition

+ References

No definition available.

+ Details

Name:	dakt_RevenueRecognitionPeriodOfDeferredRevenueRecognition
Namespace Prefix:	dakt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The percentage of net service revenue to total net revenue from the sale of services as of year end.

+ References

No definition available.

+ Details

Name:	dakt_SalesRevenueServicesNetPercentage
Namespace Prefix:	dakt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of estimated sales returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=68058157&loc=d3e18780-107790

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 15
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68051624&loc=d3e47468-111626

+ Details

Name:	us-gaap_RevenueRecognitionSalesReturnsReserveForSalesReturns
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration