Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Oct. 31, 2014	Jan. 31, 2014
Property, plant and equipment, gross	$ 9,837,000	$ 8,390,000
Preferred stock, par value	$ 0.10	$ 0.10
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.15	$ 0.15
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	14,532,434	14,289,134
Common stock, shares outstanding	14,529,201	14,285,901
Treasury stock, shares	3,233	3,233
Variable Interest Entity, Primary Beneficiary [Member]
Property, plant and equipment, gross	$ 1,617,000