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Revenue Recognition (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jul. 01, 2017 USD ($)	Jun. 30, 2018 USD ($) segment	Jul. 01, 2017 USD ($)
Revenue Recognition
Number of reportable segments | segment			1
Revenue Recognition
Total net product revenues	$ 8,426	$ 11,404	$ 17,305	$ 20,830
Contract Liabilities (Deferred Revenue)
Contract liabilities (deferred revenue)	0		0
Resales of third-party products
Revenue Recognition
Total net product revenues	6,335		13,442
Specialty DIMMs [member]
Revenue Recognition
Total net product revenues	$ 2,091		$ 3,863

X

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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