UNAUDITED QUARTERLY RESULTS OF OPERATIONS (Details) (USD $)	3 Months Ended								12 Months Ended
	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2011	Apr. 30, 2011	Jan. 31, 2013	Jan. 31, 2012
Net sales from continuing operations	$ 23,399,000	$ 24,239,000	$ 23,499,000	$ 23,981,000	$ 20,165,000	$ 24,744,000	$ 25,833,000	$ 25,585,000	$ 95,117,539	$ 96,326,989
Gross profit from continuing operations	5,598,000	7,287,000	7,131,000	7,311,000	5,313,000	7,413,000	7,798,000	8,262,000	27,327,433	28,785,798
(Loss) earnings from continuing operations	(17,572,000)	283,000	1,644,000	(10,121,000)	(1,008,000)	146,000	635,000	1,320,000	(25,766,962)	1,093,174
(Loss) earnings from discontinued operations	(522,000)	0	0	0	(540,000)	(722,000)	(51,000)	(157,000)	(521,707)	(1,469,999)
Net income (loss)	$ (18,094,000)	$ 283,000	$ 1,644,000	$ (10,121,000)	$ (1,548,000)	$ (576,000)	$ 584,000	$ 1,163,000	$ (26,288,669)	$ (376,825)
Basic net earnings (loss) per share:
Continuing operations (in dollars per share)	$ (3.30)	$ 0.05	$ 0.31	$ (1.94)	$ (0.19)	$ 0.03	$ 0.12	$ 0.25	$ (4.87)	$ 0.21
Discontinued operations (in dollars per share)	$ (0.10)	$ 0	$ 0	$ 0	$ (0.10)	$ (0.14)	$ (0.01)	$ (0.03)	$ (0.10)	$ (0.28)
Total (in dollars per share)	$ (3.40)	$ 0.05	$ 0.31	$ (1.94)	$ (0.30)	$ (0.11)	$ 0.11	$ 0.22	$ (4.97)	$ (0.07)
Diluted net earnings (loss) per share:
Continuing operations (in dollars per share)	$ (2.30)	$ 0.05	$ 0.30	$ (1.94)	$ (0.19)	$ 0.03	$ 0.12	$ 0.25	$ (4.87)	$ 0.20
Discontinued operations (in dollars per share)	$ (0.10)	$ 0	$ 0	$ 0	$ (0.10)	$ (0.13)	$ (0.01)	$ (0.03)	$ (0.10)	$ (0.27)
Total (in dollars per share)	$ (3.40)	$ 0.05	$ 0.30	$ (1.94)	$ (0.29)	$ (0.11)	$ 0.11	$ 0.22	$ (4.97)	$ (0.07)