Note 6 - Maximum Deferred Consideration Payments (Details) $ in Thousands	6 Months Ended
	Jul. 04, 2015 USD ($)
BGA [Member]
2015	$ 127
2016	$ 271
2017
Estimated future contingent consideration payments	$ 398
PCI [Member]
2015	262
2016	197
2017	307
Estimated future contingent consideration payments	766
2015	389
2016	468
2017	307
Estimated future contingent consideration payments	$ 1,164