Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 30, 2017

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

(in thousands)	2017		2016		2015
Weighted average common shares outstanding		27,836		26,659		26,057
Effect of dilutive stock options and restricted stock units		1,080		821		731
		28,916		27,480		26,788

Property, Plant and Equipment [Table Text Block]

	December 30,			December 31,
	2017			2016
Land and land improvements	$	8,017		$	4,079
Buildings and building improvements		13,779			7,967
Machinery and equipment		45,333			35,157
		67,129			47,203
Less accumulated depreciation and amortization		(32,957	)		(28,969	)
Property, plant and equipment, net	$	34,172		$	18,234