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Summary of Significant Accounting Policies - Reconciliation of Changes in Deferred Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016
Reconciliation of the changes in the Company's deferred revenue balance
Balance, beginning of period	$ 1,311	$ 1,179
Additions to deferral	1,430	1,495
Revenue recognized	(1,358)	(1,363)
Balance, end of period	$ 1,383	$ 1,311

The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

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