Note 10 - Leases - Lease Expense (Details) $ in Thousands	12 Months Ended
	Dec. 28, 2019 USD ($)
Operating leases (1)	$ 8,525	[1]
Variable lease expense	2,318
Short-term operating leases	256
Amortization of leased assets	102
Interest on lease liabilities	146
Sublease income	(133)
Net lease cost	$ 11,214

[1] Operating lease cost excludes impairment expense of $0.2 million related to the write-down of the Fontana facility right-of-use asset.