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Employee Benefit Plan (Details) - USD ($) | 12 Months Ended
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Dec. 26, 2015 | Dec. 27, 2014 | Dec. 28, 2013
Schedule of Benefit Plans Disclosure [Line Items] |  |  |
Employee age threshhold for higher annual contribution | 50 years |  |
Employer matching percentage | 50.00% |  |
Maximum amount of employee contribution that employer matches | 6.00% |  |
Amount charged to operations in connection with the plan | $ 324,000 | $ 224,000 | $ 146,000
Under the age of 50 |  |  |
Schedule of Benefit Plans Disclosure [Line Items] |  |  |
Maximum amount of annual compensation that can be deferred | 18,000 |  |
Over the age fo 50 |  |  |
Schedule of Benefit Plans Disclosure [Line Items] |  |  |
Maximum amount of annual compensation that can be deferred | $ 24,000 |  |

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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Maximum amount the employee may contribute to a defined contribution plan. + References No definition available. + Details
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