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Business Acquisitions - ChanTest, Additional Information (Details) - USD ($) |  | 6 Months Ended
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Oct. 29, 2014 | Jun. 27, 2015 | Jun. 28, 2014
Business Acquisition [Line Items] |  |  |
Total purchase price allocation |  | $ 10,680,000 | $ 183,151,000
ChanTest |  |  |
Business Acquisition [Line Items] |  |  |
Preliminary purchase price | $ 59,300,000 |  |
Contingent consideration | 300,000 |  |
Maximum contingent consideration limit | 2,000,000 |  |
Total purchase price allocation | 52,073,000 |  |
Total purchase price allocation | $ 7,200,000 |  |
Price allocation adjustment period, maximum | 1 year |  |

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