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Unaudited Consolidated Statements of Comprehensive Income (Loss) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Dec. 02, 2017
Nov. 26, 2016
Dec. 02, 2017
Nov. 26, 2016
Net sales $ 39,082 $ 33,827 $ 76,077 $ 67,200
Cost of sales 25,708 22,863 50,555 45,996
Gross profit 13,374 10,964 25,522 21,204
Selling, general, and administrative expenses 12,602 13,368 24,926 25,695
Gain on disposal of assets (191)
Operating income (loss) 772 (2,404) 787 (4,491)
Other (income) expense:        
Investment/interest income (36) (51) (170) (62)
Foreign exchange loss 115 (181) 316 97
Other, net (11) 17 (15) 16
Total other expense (income) 68 (215) 131 51
Income (loss) from continuing operations before income taxes 704 (2,189) 656 (4,542)
Income tax provision 532 333 596 830
Income (loss) from continuing operations 172 (2,522) 60 (5,372)
Income from discontinued operations 1,496 1,496
Net income (loss) 1,668 (2,522) 1,556 (5,372)
Foreign currency translation gain (loss), net of tax 230 (2,623) 2,351 (2,244)
Fair value adjustments on investments gains 48 6 34 13
Comprehensive income (loss) $ 1,946 $ (5,139) $ 3,941 $ (7,603)
Common Stock [Member]        
Net income (loss) per share - Basic:        
Income (loss) from continuing operations $ 0.01 $ (0.20) $ (0.43)
Income from discontinued operations 0.12 0.12
Total net income (loss) per share - Basic 0.13 (0.20) 0.12 (0.43)
Net income (loss) per share - Diluted:        
Income (loss) from continuing operations 0.01 (0.20) (0.43)
Income from discontinued operations 0.12 0.12
Total net income (loss) per share - Diluted $ 0.13 $ (0.20) $ 0.12 $ (0.43)
Weighted average number of shares:        
Common shares - Basic 10,755 10,703 10,734 10,703
Common shares - Diluted 10,789 10,703 10,764 10,703
Dividends per share $ 0.060 $ 0.060 $ 0.120 $ 0.120
Class B Common [Member]        
Net income (loss) per share - Basic:        
Income (loss) from continuing operations 0.01 (0.18) (0.38)
Income from discontinued operations 0.11 0.11
Total net income (loss) per share - Basic 0.12 (0.18) 0.11 (0.38)
Net income (loss) per share - Diluted:        
Income (loss) from continuing operations 0.01 (0.18) (0.38)
Income from discontinued operations 0.11 0.11
Total net income (loss) per share - Diluted $ 0.12 $ (0.18) $ 0.11 $ (0.38)
Weighted average number of shares:        
Common shares - Basic 2,137 2,141 2,137 2,141
Common shares - Diluted 2,137 2,141 2,137 2,141
Dividends per share $ 0.054 $ 0.054 $ 0.108 $ 0.108