Income Taxes Income before income taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Income before income taxes [Abstract]
United States	$ 10,907	$ 7,346	$ 2,939
Outside the United States	697	(52)	1,065
Earnings from continuing operations before income tax expense	$ 11,604	$ 7,294	$ 4,004