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Fair Value Measurement - Financial Assets and Liabilities Measured and Recognized at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Jan. 02, 2016
--- | --- | ---
Money Market Funds |  |
Assets: |  |
Assets, Fair Value Measurements | $ 8,270 | $ 9,212
Earn Out Liability |  |
Liabilities: |  |
Liabilities, Fair Value Measurements | 694 | 1,005
Level 1 | Money Market Funds |  |
Assets: |  |
Assets, Fair Value Measurements | 8,270 | 9,212
Level 3 | Earn Out Liability |  |
Liabilities: |  |
Liabilities, Fair Value Measurements | $ 694 | $ 1,005

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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- Definition Aggregation of the liabilities reported on the balance sheet measured at fair value on a recurring basis by the entity. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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