Note 14 - Business Segment Reporting (Tables)

6 Months Ended

Nov. 24, 2013

Segment Reporting [Abstract]

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

	Three Months Ended				Six Months Ended
	November 24, 2013		November 25, 2012		November 24, 2013		November 25, 2012
Taiwan	$	12.6	$	12.9	$	24.6	$	25.8
Canada	$	10.2	$	6.1	$	19.6	$	12.3
China	$	3.7	$	2.8	$	5.3	$	3.7
Indonesia	$	2.4	$	7.4	$	4.9	$	13.5
Japan	$	2.1	$	2.8	$	5.3	$	5.9
Belgium	$	0.8	$	1.6	$	2.0	$	4.6
All Other Countries	$	4.9	$	4.6	$	10.2	$	8.8

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

Three Months Ended Nov. 24, 2013	Food Products Technology		Food Export		HA-based Biomaterials		Corporate			TOTAL
Net sales	$	88,090	$	23,031	$	8,777	$	128		$	120,026
International sales	$	10,345	$	22,940	$	3,366	$	—		$	36,651
Gross profit	$	8,220	$	1,820	$	3,625	$	69		$	13,734
Net income (loss)	$	2,005	$	727	$	611	$	108		$	3,451
Depreciation and amortization	$	1,304	$	1	$	604	$	36		$	1,945
Dividend income	$	281	$	—	$	—	$	—		$	281
Interest income	$	2	$	—	$	44	$	—		$	46
Interest expense	$	356	$	—	$	80	$	—		$	436
Income tax expense	$	1,461	$	205	$	172	$	36		$	1,874
Three Months Ended Nov. 25, 2012
Net sales	$	78,592	$	28,115	$	7,740	$	207		$	114,654
International sales	$	5,959	$	28,055	$	4,222	$	—		$	38,236
Gross profit	$	13,102	$	2,034	$	3,116	$	207		$	18,459
Net income (loss)	$	9,212	$	866	$	338	$	(1,503	)	$	8,913
Depreciation and amortization	$	1,174	$	1	$	592	$	38		$	1,805
Dividend income	$	281	$	—	$	—	$	—		$	281
Interest income	$	7	$	—	$	26	$	—		$	33
Interest expense	$	427	$	—	$	71	$	—		$	498
Income tax expense	$	1,761	$	288	$	113	$	758		$	2,920
Six Months Ended Nov. 24, 2013
Net sales	$	167,526	$	44,430	$	17,363	$	186		$	229,505
International sales	$	19,823	$	44,329	$	7,743	$	—		$	71,895
Gross profit	$	17,101	$	3,025	$	6,013	$	127		$	26,266
Net income (loss)	$	9,271	$	1,003	$	235	$	(2,306	)	$	8,203
Depreciation and amortization	$	2,526	$	2	$	1,188	$	71		$	3,787
Dividend income	$	563	$	—	$	—	$	—		$	563
Interest income	$	5	$	—	$	100	$	—		$	105
Interest expense	$	732	$	—	$	135	$	—		$	867
Income tax expense	$	1,966	$	283	$	66	$	2,034		$	4,349
Six Months Ended Nov. 25, 2012
Net sales	$	147,223	$	53,473	$	15,713	$	319		$	216,728
International sales	$	12,182	$	53,366	$	9,024	$	—		$	74,572
Gross profit	$	23,045	$	3,376	$	5,482	$	319		$	32,222
Net income (loss)	$	15,128	$	1,175	$	26	$	(3,050	)	$	13,279
Depreciation and amortization	$	2,410	$	2	$	1,175	$	74		$	3,661
Dividend income	$	563	$	—	$	—	$	—		$	563
Interest income	$	8	$	—	$	50	$	—		$	58
Interest expense	$	882	$	—	$	157	$	—		$	1,039
Income tax expense	$	3,733	$	391	$	9	$	1,351		$	5,484