Note 20 - Severance, Professional Fees, Office Closures and Other Charges (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017
Severance, Professional Fees and Other Charges	$ 1,571	$ 1,447
Transactional Advisory Fees, Legal Fees, and Search Fees [Member]
Severance, Professional Fees and Other Charges	700
Closure Costs for Offices [Member]
Severance, Professional Fees and Other Charges		800
Former Chief Executive Officer [Member] | Severance Accrued and Related Payroll Taxes, Continuation of Certain Benefits and Professional Fees [Member]
Severance, Professional Fees and Other Charges	$ 900
Senior Executive [Member] | Severance, Legal Fees Related to Acquisition, and Other Legal Miscellaneous Charges [Member]
Severance, Professional Fees and Other Charges		$ 600