Note 7 - Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Mar. 31, 2016
Goodwill, Period Increase (Decrease)	$ (1,138)
Amortization of Intangible Assets	$ 1,931	$ 864
Trade Names [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	1 year
Trade Names [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	3 years
Customer Lists [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	1 year
Customer Lists [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	9 years
Noncompete Agreements [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	4 years
Noncompete Agreements [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	5 years
Off-Market Favorable Lease [Member]
Finite-Lived Intangible Asset, Useful Life	9 years