Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016		Dec. 26, 2015
Net income	$ 32,843	$ 3,039	[1]	$ 250
Other comprehensive income (loss)
Foreign currency translation adjustments, net of tax	11,345	(5,789)		(11,000)
Adjustments related to postretirement benefits	(1,248)	(316)		(58)
Change in unrealized gain/loss on investments, net of tax	(2)	(5)
Other comprehensive income (loss), net of tax	10,095	(6,110)		(11,058)
Comprehensive income (loss)	$ 42,938	$ (3,071)		$ (10,808)

[1] As a result of the adoption of ASU 2016-09, in the fourth quarter of 2016, certain amounts in the first three quarters have been restated as if the new accounting guidance was adopted starting with the first day of our 2016 fiscal year. The impact of these restatements was not significant.