Note 9 - Business Segment Reporting (Tables)

3 Months Ended

Aug. 26, 2018

Notes Tables

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	Three Months Ended
	August 26, 2018		August 27, 2017
Canada	$	19.9	$	18.0
Belgium	$	2.0	$	2.2
Ireland	$	1.1	$	0.8
Denmark	$	0.2	$	0.1
Switzerland	$	0.1	$	—
Mexico	$	0.1	$	0.1
All Other Countries	$	0.4	$	0.5

Schedule of Segment Reporting Information, by Segment [Table Text Block]

Three Months Ended August 26, 2018	Natural Foods		Biomaterials			Other			Total
Net sales	$	112,051	$	12,617		$	—		$	124,668
International sales	$	20,112	$	3,716		$	—		$	23,828
Gross profit	$	13,370	$	2,967		$	—		$	16,337
Net income (loss) from continuing operations	$	1,768	$	(547	)	$	(1,031	)	$	190
Depreciation and amortization	$	2,095	$	976		$	74		$	3,145
Dividend income	$	413	$	—		$	—		$	413
Interest income	$	31	$	—		$	15		$	46
Interest expense, net (1)	$	587	$	—		$	171		$	758
Income tax expense (benefit)	$	663	$	(182	)	$	(417	)	$	64
Three Months Ended August 27, 2017
Net sales	$	103,617	$	12,164		$	—		$	115,781
International sales	$	18,174	$	3,499		$	—		$	21,673
Gross profit	$	15,280	$	3,522		$	—		$	18,802
Net income (loss) from continuing operations	$	3,821	$	(155	)	$	(1,311	)	$	2,355
Depreciation and amortization	$	2,052	$	865		$	37		$	2,954
Dividend income	$	413	$	—		$	—		$	413
Interest income	$	11	$	—		$	20		$	31
Interest expense, net	$	—	$	—		$	404		$	404
Income tax expense (benefit)	$	1,096	$	(27	)	$	241		$	1,310