Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015
OPERATIONS
Net sales	$ 64,226	$ 58,684	$ 125,402	$ 107,426
Cost of sales	58,996	51,457	113,592	95,556
Gross profit	5,230	7,227	11,810	11,870
Selling and administrative expenses	5,739	5,400	11,489	10,859
Operating (loss) income	(509)	1,827	321	1,011
Interest expense	(86)	(79)	(172)	(158)
(Loss) income from continuing operations before income taxes	(595)	1,748	149	853
Income tax expense	0	0	0	0
(Loss) income from continuing operations	(595)	1,748	149	853
(Loss) income from discontinued operations, net of taxes		(42)		19
Net (loss) income	$ (595)	$ 1,706	$ 149	$ 872
Basic and diluted (loss) income per share	$ (0.07)	$ 0.20	$ 0.02	$ 0.10
Basic and diluted (loss) income per share from continuing operations	$ (0.07)	0.21	$ 0.02	$ 0.10
Basic and diluted income (loss) per share from discontinued operations		$ (0.01)
Weighted average number of common shares outstanding:
Basic	8,391,244	8,391,244	8,391,244	8,391,244
Diluted	8,391,244	8,391,244	8,512,903	8,391,244