Note 9 - Leases - Balance Sheet Information (Details) - USD ($) $ in Thousands		Jun. 29, 2019	Dec. 29, 2018	[1]
Operating lease assets		$ 35,224
Finance lease assets	[2]	2,604
Total lease assets		37,828
Operating		30,168
Finance		2,605
Total lease liabilities		$ 37,766
Operating leases (Year)		8 years 73 days
Finance leases (Year)		1 year
Operating leases		6.10%
Finance leases		4.50%
Other Accrued Liabilities [Member]
Operating		$ 4,958
Finance		$ 35

[1] Derived from December 29, 2018 audited financial statements

[2] Finance lease assets are recorded net of accumulated amortization of $0.1 million.