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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Common Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Loss | Noncontrolling Interests | Total
--- | --- | --- | --- | --- | --- | ---
Balances at Jan. 31, 2014 | $ 2,143 | $ 100,830 | $ 53,335 |  | $ 1,469 | $ 157,777
Balances (in shares) at Jan. 31, 2014 | 14,285,901 |  |  |  |  |
Net income |  |  | 30,445 |  | 13,010 | 43,455
Exercise of stock options | $ 52 | 5,336 |  |  |  | $ 5,388
Exercise of stock options (in shares) | 345,300 |  |  |  |  | 346,000
Stock option vesting |  | 2,017 |  |  |  | $ 2,017
Excess tax benefit on exercised stock options |  | 1,480 |  |  |  | 1,480
Cash dividends |  |  | (10,166) |  |  | (10,166)
Cash distributions to joint venture partner |  |  |  |  | (25,000) | (25,000)
Formation of VIE |  |  |  |  | 1 | 1
Balances at Jan. 31, 2015 | $ 2,195 | 109,663 | 73,614 |  | (10,520) | 174,952
Balances (in shares) at Jan. 31, 2015 | 14,631,201 |  |  |  |  |
Net income |  |  | 36,345 |  | 13,859 | 50,204
Foreign currency translation loss |  |  |  | $ (565) |  | (565)
Acquisition of APC | $ 15 | 3,521 |  |  |  | 3,536
Acquisition of APC (in shares) | 98,818 |  |  |  |  |
Exercise of stock options | $ 16 | 1,802 |  |  |  | $ 1,818
Exercise of stock options (in shares) | 106,450 |  |  |  |  | 106,000
Stock option vesting |  | 2,374 |  |  |  | $ 2,374
Excess tax benefit on exercised stock options |  | (86) |  |  |  | (86)
Cash dividends |  |  | (10,378) |  |  | (10,378)
Balances at Jan. 31, 2016 | $ 2,226 | 117,274 | 99,581 | (565) | 3,339 | 221,855
Balances (in shares) at Jan. 31, 2016 | 14,836,469 |  |  |  |  |
Net income |  |  | 70,328 |  | 7,098 | 77,426
Foreign currency translation loss |  |  |  | (197) |  | (197)
Exercise of stock options | $ 93 | 15,808 |  |  |  | $ 15,901
Exercise of stock options (in shares) | 621,750 |  |  |  |  | 622,000
Stock option vesting |  | 2,344 |  |  |  | $ 2,344
Cash dividends |  |  | (15,260) |  |  | (15,260)
Cash distributions to joint venture partner |  |  |  |  | (9,500) | (9,500)
Balances at Jan. 31, 2017 | $ 2,319 | $ 135,426 | $ 154,649 | $ (762) | $ 937 | $ 292,569
Balances (in shares) at Jan. 31, 2017 | 15,458,219 |  |  |  |  |

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