Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017
Income Statement [Abstract]
Operating revenues	$ 53,996	$ 55,765
Operating costs	47,063	49,327
Gross profit	6,933	6,438
Operating costs and expenses:
Selling, general, and administrative expenses	10,030	12,581
Goodwill impairment	2,086
Operating loss	(5,183)	(6,143)
Other income (expense)
Interest expense, net	(22)	(104)
Other income (expense), net	(356)	76
Loss before income taxes	(5,561)	(6,171)
Provision for federal and state income taxes	(110)	(10,087)
Net loss	$ (5,671)	$ (16,258)
Basic and diluted loss per common share	$ (0.21)	$ (0.59)
Basic and diluted weighted average shares used in computing loss per share:	27,510,000	27,352,000