Business Acquisitions Business Acquisition (Details) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Aug. 01, 2016	Jan. 15, 2015	Apr. 01, 2017	Apr. 02, 2016	Mar. 28, 2015
Compensation and Expenses for Business Acquisitions [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	$ 4,500
Business Combination, Integration Related Costs			$ 366	$ 194	$ 776
Visicon [Member]
Compensation and Expenses for Business Acquisitions [Line Items]
Payments to Acquire Businesses, Gross	$ 2,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	637,082
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 3,300
Acquisition Costs, Cumulative	$ 400
BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssuedinEscrow	33,143
Topwin [Member]
Compensation and Expenses for Business Acquisitions [Line Items]
Payments to Acquire Businesses, Gross		$ 7,600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		$ 4,900
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares		748,944
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable		$ 2,900
BusinessCombinationContingentConsiderationArrangementsSharesIssuedorIssuable		374,472
BusinessCombinationContingentConsiderationLiabilityESI		$ 400
BusinessCombinationNonContingentConsiderationArrangementsSharesIssuedorIssuable		374,472
BusinessCombinationNonContingentConsiderationLiability		$ 2,500
SharesGrantedAsConsiderationContingent		0
BusinessCombinationContingentConsiderationArrangementsSharesIssuedNonContingent		212,217
Sharesgrantascompensation		513,328
Valueofsharesgrantascompensation		$ 2,000
Cashcompensation		200
Allocatedacquisitionrelatedcompensationexpensessharebased		$ 1,500
SharesGrantedAsConsiderationContingentToEmployee		0
SharesGrantedAsConsiderationnoncontingent		145,427
BusinessAcquisitionEquityInterestIssuedorIssuableNumberofSharesIssuancePeriod		3 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 3,618
Business Combination, Integration Related Costs			$ 0	$ 200
BusinessCombinationContingentConsiderationArrangementsSharesRecovered		63,114
BusinessCombinationContingentConsiderationArrangementSharesRecoveredpricepershare		$ 6.30
Developed Technology Rights [Member] | Visicon [Member]
Compensation and Expenses for Business Acquisitions [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 2,100
Developed Technology Rights [Member] | Topwin [Member]
Compensation and Expenses for Business Acquisitions [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 3,500