Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands	12 Months Ended
	Dec. 28, 2024 USD ($)	Dec. 30, 2023 USD ($)
Cash and Cash Equivalents, at Carrying Value	$ 4,729	$ 6,284
Property, Plant and Equipment, Useful Life (Year)	5 years
Number of Reporting Units	3
Goodwill, Impairment Loss	$ 0	0
Capitalized Computer Software, Additions	4,141	1,947
Capitalized Computer Software, Net	5,622	2,325
Deferred Tax Assets, Valuation Allowance	0	0
Revenue from Contract with Customer, Including Assessed Tax	278,380	263,237
Contract with Customer, Liability	4,200	1,900
Contract with Customer, Liability, Revenue Recognized	1,900	1,100
Advertising Expense	$ 719	$ 781
Revenue, Segment Benchmark [Member] | Customer Concentration Risk [Member]
Number of Customers	2	2
Revenue, Segment Benchmark [Member] | Customer Concentration Risk [Member] | Customer 1 [Member]
Concentration Risk, Percentage	19.50%	17.10%
Revenue, Segment Benchmark [Member] | Customer Concentration Risk [Member] | Customer 2 [Member]
Concentration Risk, Percentage	14.10%	10.10%
Revenue, Segment Benchmark [Member] | Customer Concentration Risk [Member] | Ten Largest Customers [Member]
Number of Customers	10	10
Concentration Risk, Percentage	60.10%	50.40%
Revenue, Segment Benchmark [Member] | Customer Concentration Risk [Member] | Twenty Largest Customers [Member]
Number of Customers	20	20
Concentration Risk, Percentage	70.60%	62.70%
Revenue, Segment Benchmark [Member] | Customer Concentration Risk [Member] | Five Largest Customers [Member]
Number of Customers		5
Concentration Risk, Percentage	48.50%	39.10%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 1 [Member]
Concentration Risk, Percentage	20.40%	21.20%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 2 [Member]
Concentration Risk, Percentage	12.50%	14.70%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Three Customers [Member]
Number of Customers	3
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 3 [Member]
Concentration Risk, Percentage	11.40%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Two Customers [Member]
Number of Customers		2
Transit Accounts Payable [Member]
Accounts Payable, Net		$ 22,200
Transit Accounts Receivable [Member]
Accounts Receivable, before Allowance for Credit Loss, Current	$ 7,300	8,900
Accounts Payable, Current	23,900	31,100
Accounts Payable, Net	16,600
Service, Other [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 1,500	1,700
Restricted Covenants [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	4 years
Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	6 years
CANADA
Cash and Cash Equivalents, at Carrying Value	$ 269	103
Revenue from Contract with Customer, Including Assessed Tax	7,196	6,480
SERBIA
Cash and Cash Equivalents, at Carrying Value	496	638
GERMANY
Cash and Cash Equivalents, at Carrying Value	556
NETHERLANDS
Cash and Cash Equivalents, at Carrying Value	$ 2	$ 4