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Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Apr. 01, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Commitments The Company's manufacturing suppliers require the forecast of wafer starts several months in advance. The Company is required to take delivery of and pay for a portion of forecasted wafer volume. As of April 1, 2018, and December 31, 2017, the Company had $946,000 and $1.1 million, respectively, of outstanding commitments for the purchase of wafer and finished goods inventory. The Company has obligations with certain suppliers for the purchase of other goods and services entered into in the ordinary course of business. As of April 1, 2018, total outstanding purchase obligations for other goods and services were $1.6 million, $1.5 million of which are due within the next twelve months, except for $62,000 relating to capital lease maintenance commitment. The Company leases its primary facility under an operating lease that expires in March 2020. In addition, the Company rents development facilities in India as well as sales offices in Europe and Asia. Total rent expense for the three months ended April 1, 2018 and April 2, 2017 was approximately $238,000 and $211,000, respectively.