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Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	9 Months Ended
	Oct. 03, 2015	Jan. 03, 2015
Fair Value of Financial Instruments.
Costs of services	$ 800
Payment of contingent consideration	300
Recurring | Level 1
Fair Value of Financial Instruments.
Total Assets	46	$ 20,042
Recurring | Level 1 | Money Market Funds
Fair Value of Financial Instruments.
Cash and cash equivalents	46	20,042
Recurring | Level 3
Fair Value of Financial Instruments.
Contingent acquisition liability	873	316
Total Liabilities	$ 873	$ 316

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Amount of cash payments that could result from the contingent consideration arrangement.

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value of financial and nonfinancial obligations.

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