Note 4 - Accounts Receivable, Transit Accounts Receivable and Transit Accounts Payable (Tables)

3 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

	March 31, 2018			December 30, 2017
Billed	$	33,405		$	31,448
Accrued and unbilled		14,446			10,573
Work-in-progress		5,178			5,026
Allowance for sales discounts and doubtful accounts		(1,116	)		(967	)
Accounts receivable, net	$	51,913		$	46,080