Note 15 - Employee Benefit Plans (Details) - Change in Benefit Obligation - Domestic SCP [Member] - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2016	Dec. 28, 2014	Dec. 29, 2013
Change in benefit obligation
Benefit obligation, beginning of year	$ 24,016	$ 20,947
Benefit obligation, end of year	25,860	24,016	$ 20,947
Service cost	594	500	534
Interest cost	1,113	1,071	$ 997
Benefits paid	(847)	(847)
Actuarial loss (gain)	$ 984	$ 2,345