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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) | Common Stock [Member] | Treasury Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Noncontrolling Interest [Member] | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Jan. 31, 2015 | $ 299,000 | $ (239,557,000) | $ 144,791,000 | $ 444,438,000 | $ 42,993,000 | $ 392,964,000
Balance (in Shares) at Jan. 31, 2015 | 29,853,000 | 21,954,000 |  |  |  |
Net income |  |  |  | 31,436,000 | 5,974,000 | 37,410,000
Treasury stock acquired |  | $ (70,208,000) |  |  |  | $ (70,208,000)
Treasury stock acquired (in Shares) |  | 1,254,000 |  |  |  | 1,254,344
Noncontrolling interests distribution and other |  |  |  |  | (4,471,000) | $ (4,471,000)
Stock options and related tax effects |  | $ 11,000 | 53,000 |  |  | 64,000
Stock options and related tax effects (in Shares) |  | (4,000) |  |  |  |
Balance at Jan. 31, 2016 | $ 299,000 | $ (309,754,000) | 144,844,000 | 475,874,000 | 44,496,000 | 355,759,000
Balance (in Shares) at Jan. 31, 2016 | 29,853,000 | 23,204,000 |  |  |  |
Net income |  |  |  | 32,333,000 | 7,185,000 | 39,518,000
Treasury stock acquired |  | $ (4,353,000) |  |  |  | $ (4,353,000)
Treasury stock acquired (in Shares) |  | 88,000 |  |  |  | 87,904
Noncontrolling interests distribution and other |  |  |  |  | (3,842,000) | $ (3,842,000)
Stock options and related tax effects |  | $ 269,000 | 923,000 |  |  | 1,192,000
Balance at Jan. 31, 2017 | $ 299,000 | $ (313,838,000) | 145,767,000 | 508,207,000 | 47,839,000 | 388,274,000
Balance (in Shares) at Jan. 31, 2017 | 29,853,000 | 23,292,000 |  |  |  |
Net income |  |  |  | 39,706,000 | 5,206,000 | 44,912,000
Capital contributions |  |  |  |  | 918,000 | 918,000
Noncontrolling interests distribution and other |  |  |  |  | (3,529,000) | (3,529,000)
Stock options and related tax effects |  | $ 195,000 | 1,156,000 |  |  | 1,351,000
Stock options and related tax effects (in Shares) |  | (5,000) |  |  |  |
Balance at Jan. 31, 2018 | $ 299,000 | $ (313,643,000) | $ 146,923,000 | $ 547,913,000 | $ 50,434,000 | $ 431,926,000
Balance (in Shares) at Jan. 31, 2018 | 29,853,000 | 23,287,000 |  |  |  |

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