Marketable Securities (Tables)

12 Months Ended

Dec. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Schedule of Composition of Marketable Securities

The following table summarizes the composition of our Short-term marketable securities at fair value: 

(In thousands)	December 30, 2017		December 31, 2016
Short-term marketable securities:
Corporate and government bonds and notes	$	4,982	$	10,230
Certificates of deposit	—		78
Total marketable securities	$	4,982	$	10,308