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Consolidated Statements of Stockholders' Equity (USD $) | Total | Common Stock | Warrants | Additional Paid-in Capital | Retained Earnings | Noncontrolling Interest | Treasury Stock
--- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Jan. 31, 2011 | $ 97,645,000 | $ 2,040,000 | $ 601,000 | $ 88,561,000 | $ 6,476,000 |  | $ (33,000)
Beginning Balance Shares, Outstanding at Jan. 31, 2011 |  | 13,598,994 |  |  |  |  |
Net income (loss) | 8,970,000 |  |  |  | 9,272,000 | (302,000) |
Exercise of stock options | 507,000 | 8,000 |  | 499,000 |  |  |
Exercise of stock options, Shares | 55,038 | 55,038 |  |  |  |  |
Conversion of stock warrants | 23,000 | 1,000 | (11,000) | 33,000 |  |  |
Conversion of stock warrants, Shares |  | 3,000 |  |  |  |  |
Stock option vesting | 637,000 |  |  | 637,000 |  |  |
Reversal of excess tax benefit on forfeited stock options | (16,000) |  |  | (16,000) |  |  |
Dividends | (6,804,000) |  |  |  | (6,804,000) |  |
Others | 1,000 |  |  |  |  | 1,000 |
Others, Shares |  | 833 |  |  |  |  |
Ending Balance at Jan. 31, 2012 | 100,963,000 | 2,049,000 | 590,000 | 89,714,000 | 8,944,000 | (301,000) | (33,000)
Ending Balance Shares, Outstanding at Jan. 31, 2012 |  | 13,657,865 |  |  |  |  |
Net income (loss) | 21,817,000 |  |  |  | 23,265,000 | (1,448,000) |
Exercise of stock options | 1,436,000 | 23,000 |  | 1,413,000 |  |  |
Exercise of stock options, Shares | 153,962 | 153,962 |  |  |  |  |
Conversion of stock warrants | 1,240,000 | 24,000 | (590,000) | 1,806,000 |  |  |
Conversion of stock warrants, Shares |  | 160,000 |  |  |  |  |
Stock option vesting | 1,316,000 |  |  | 1,316,000 |  |  |
Release of restricted stock | 25,000 |  |  | 25,000 |  |  |
Release of restricted stock, Shares |  | 2,500 |  |  |  |  |
Excess tax benefit on exercised stock options and converted warrants | 730,000 |  |  | 730,000 |  |  |
Dividends | (8,359,000) |  |  |  | (8,359,000) |  |
Ending Balance at Jan. 31, 2013 | $ 119,168,000 | $ 2,096,000 | $ 0 | $ 95,004,000 | $ 23,850,000 | $ (1,749,000) | $ (33,000)
Ending Balance Shares, Outstanding at Jan. 31, 2013 |  | 13,974,327 |  |  |  |  |

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