Benefit Plans (Change in Fair Value of Plan Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2016	Jan. 01, 2016
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	$ 871	$ 437
Employer contributions (refund)	36	69
Plan participants’ contribution	75	61
Actual loss on plan assets	(9)	(39)
Benefits transferred in, net	224	362
Foreign currency translation	(25)	(19)
Fair value of plan assets at end of year	1,172	871
Projected benefit obligation in excess of plan assets at end of year	7,556	7,121
Defined benefit liability classified as other current liabilities	109	46
Defined benefit liability classified as long-term liabilities	7,447	7,075
Accumulated benefit obligation at end of year	$ 7,115	$ 6,299