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Note 14 - Business Segment Reporting (Detail) - Operations by Business Segment (USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Feb. 24, 2013 | Feb. 26, 2012 | Feb. 24, 2013 | Feb. 26, 2012
Gross profit | $ 17,508,000 | $ 13,172,000 | $ 49,730,000 | $ 37,432,000
Net income (loss) | 4,789,000 | 4,765,000 | 18,068,000 | 9,917,000
Dividend Income | 281,000 | 281,000 | 844,000 | 844,000
Interest income | 46,000 | 63,000 | 104,000 | 219,000
Interest expense | 487,000 | 153,000 | 1,526,000 | 492,000
Income tax expense | 2,754,000 | 2,920,000 | 8,238,000 | 6,079,000
Food Products Technology [Member] |  |  |  |
Net sales | 86,707,000 | 56,456,000 | 233,931,000 | 146,512,000
International sales | 7,293,000 | 5,179,000 | 19,475,000 | 14,890,000
Gross profit | 5,846,000 | 5,478,000 | 28,891,000 | 16,068,000
Net income (loss) | 338,000 | 5,851,000 | 15,466,000 | 11,846,000
Depreciation and amortization | 1,224,000 | 762,000 | 3,634,000 | 2,313,000
Dividend Income | 281,000 | 281,000 | 844,000 | 844,000
Interest income | 4,000 | 12,000 | 12,000 | 42,000
Interest expense | 421,000 |  | 1,303,000 |
Income tax expense | 113,000 |  | 3,846,000 |
Food Export [Member] |  |  |  |
Net sales | 13,381,000 | 12,388,000 | 66,854,000 | 57,972,000
International sales | 13,381,000 | 12,159,000 | 66,747,000 | 57,619,000
Gross profit | 1,031,000 | 917,000 | 4,407,000 | 3,733,000
Net income (loss) | 228,000 | 339,000 | 1,403,000 | 1,729,000
Depreciation and amortization | 1,000 | 2,000 | 3,000 | 6,000
Income tax expense | 76,000 |  | 467,000 |
HA-based Biomaterials [Member] |  |  |  |
Net sales | 17,331,000 | 11,066,000 | 33,043,000 | 27,422,000
International sales | 13,579,000 | 7,600,000 | 22,603,000 | 19,250,000
Gross profit | 10,243,000 | 6,623,000 | 15,725,000 | 14,602,000
Net income (loss) | 5,687,000 | 3,970,000 | 5,713,000 | 7,270,000
Depreciation and amortization | 602,000 | 572,000 | 1,777,000 | 1,655,000
Interest income | 42,000 | 43,000 | 92,000 | 148,000
Interest expense | 66,000 | 153,000 | 223,000 | 492,000
Income tax expense | 1,895,000 |  | 1,904,000 |
Corporate [Member] |  |  |  |
Net sales | 448,000 | 154,000 | 767,000 | 3,029,000
Gross profit | 388,000 | 154,000 | 707,000 | 3,029,000
Net income (loss) | (1,464,000) | (5,395,000) | (4,514,000) | (10,928,000)
Depreciation and amortization | 39,000 | 46,000 | 113,000 | 137,000
Interest income |  | 8,000 |  | 29,000
Income tax expense | 670,000 | 2,920,000 | 2,021,000 | 6,079,000
Total [Member] |  |  |  |
Net sales | 117,867,000 | 80,064,000 | 334,595,000 | 234,935,000
International sales | 34,253,000 | 24,938,000 | 108,825,000 | 91,759,000
Gross profit | 17,508,000 | 13,172,000 | 49,730,000 | 37,432,000
Net income (loss) | 4,789,000 | 4,765,000 | 18,068,000 | 9,917,000
Depreciation and amortization | 1,866,000 | 1,382,000 | 5,527,000 | 4,111,000
Dividend Income | 281,000 | 281,000 | 844,000 | 844,000
Interest income | 46,000 | 63,000 | 104,000 | 219,000
Interest expense | 487,000 | 153,000 | 1,526,000 | 492,000
Income tax expense | $ 2,754,000 | $ 2,920,000 | $ 8,238,000 | $ 6,079,000

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