Revenue Recognition - Accounts Receivable Allowance - (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Oct. 01, 2016	Jan. 02, 2016
Roll forward of the accounts receivable allowance
Balance at beginning of period	$ 3,648	$ 4,177
Increases to reserves	1,010	2,361
Amounts written off	(1,289)	(2,881)
Effects of foreign currency translation	2	(9)
Balance at end of period	$ 3,371	$ 3,648