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Consolidated Balance Sheets (Parenthetical) (USD $) | Jan. 31, 2014 | Jan. 31, 2013
--- | --- | ---
Property, plant and equipment, gross | $ 8,390,000 | $ 13,230,000
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 | 14,289,134 | 13,977,560
Common stock, shares outstanding | 14,285,901 | 13,974,327
Treasury stock, shares | 3,233 | 3,233
Construction Project Costs of Variable Interest Entities [Member] |  |
Property, plant and equipment, gross |  | $ 5,309,000

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