Business Acquisitions - Additional Information (Details) - USD ($) $ in Thousands				3 Months Ended		12 Months Ended
	Jan. 15, 2015	Sep. 20, 2013	May. 03, 2013	Mar. 28, 2015	Dec. 27, 2014	Mar. 28, 2015	Mar. 29, 2014	Mar. 30, 2013
Business Acquisition [Line Items]
Goodwill				$ 7,717		$ 7,717	$ 7,889
Business Combination, Acquisition Related Costs				$ 500	$ 300
Gain on acquisition of Semiconductor Systems business						$ 0	499	$ 0
Developed technology
Business Acquisition [Line Items]
Estimated useful life of finite-lived intangible assets acquired						6 years 8 months 12 days
Customer backlog
Business Acquisition [Line Items]
Estimated useful life of finite-lived intangible assets acquired						10 months 24 days
Selling, General and Administrative Expenses
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs						$ 800	(1,500)
Topwin
Business Acquisition [Line Items]
Cash Paid to acquire business	$ 7,700
Shares issuable	748,944
Shares issuable, Period of issuance (in years)	3 years
Value of shares issuable	$ 2,800
Shares issuable as contingent consideration	374,472
Value of shares issuable as contingent consideration	$ 300
Shares issuable as non-contingent consideration	374,472
Value of shares issuable as non-contingent consideration	$ 2,500
Total purchase price	10,600
Goodwill	7,717
Assets acquired	4,700
Acquired intangibles	3,618
Liabilities assumed	1,900
Inventory	544
Topwin | Developed technology
Business Acquisition [Line Items]
Acquired finite-lived intangibles	$ 3,500
Topwin | Minimum | Developed technology
Business Acquisition [Line Items]
Estimated useful life of finite-lived intangible assets acquired	1 year
Topwin | Maximum | Developed technology
Business Acquisition [Line Items]
Estimated useful life of finite-lived intangible assets acquired	10 years
Semiconductor Systems business
Business Acquisition [Line Items]
Cash Paid to acquire business		$ 9,700
Acquired intangibles			$ 700
Current liabilities acquired			(2,300)
Net assets acquired			10,500
Gain on acquisition							(800)
Acquisition related deferred tax liabilities							$ 300
Inventory			8,200
Receivables and other current assets acquired			3,900
Semiconductor Systems business | Developed technology
Business Acquisition [Line Items]
Acquired finite-lived intangibles			200
Semiconductor Systems business | Customer backlog
Business Acquisition [Line Items]
Acquired finite-lived intangibles			$ 500
Semiconductor Systems business | Minimum
Business Acquisition [Line Items]
Estimated useful life of finite-lived intangible assets acquired			1 year
Semiconductor Systems business | Maximum
Business Acquisition [Line Items]
Estimated useful life of finite-lived intangible assets acquired			3 years