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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Other Comprehensive Income (AOCI) [Member] | Retained Earnings [Member]
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2010 | $ 22,427 | $ 351 | $ 152,014 | $ 2,100 | $ (132,038)
Balance (in shares) at Dec. 31, 2010 |  | 35,084 |  |  |
Net income (loss) | 1,348 | 0 | 0 | 0 | 1,348
Other comprehensive income (loss) | 305 | 0 | 0 | 305 | 0
Common stock issued upon exercise of options | 3,343 | 9 | 3,334 | 0 | 0
Common stock issued upon exercise of options (in shares) |  | 851 |  |  |
Stock-based compensation | 2,035 | 0 | 2,035 | 0 | 0
Stock-based compensation (in shares) |  | 0 |  |  |
Vested restricted stock | 0 | 1 | (1) | 0 | 0
Vested restricted stock (in shares) |  | 106 |  |  |
Balance at Dec. 30, 2011 | 29,458 | 361 | 157,382 | 2,405 | (130,690)
Balance (in shares) at Dec. 30, 2011 |  | 36,041 |  |  |
Net income (loss) | (1,763) | 0 | 0 | 0 | (1,763)
Other comprehensive income (loss) | (825) | 0 | 0 | (825) | 0
Common stock issued upon exercise of options | 1,514 | 3 | 1,511 | 0 | 0
Common stock issued upon exercise of options (in shares) |  | 324 |  |  |
Stock-based compensation | 3,358 | 0 | 3,358 | 0 | 0
Stock-based compensation (in shares) |  | 0 |  |  |
Vested restricted stock | 0 | 0 | 0 | 0 | 0
Vested restricted stock (in shares) |  | 58 |  |  |
Balance at Dec. 28, 2012 | 31,742 | 364 | 162,251 | 1,580 | (132,453)
Balance (in shares) at Dec. 28, 2012 |  | 36,423 |  |  |
Net income (loss) | 398 | 0 | 0 |  | 398
Other comprehensive income (loss) | (1,298) | 0 | 0 | (1,298) | 0
Common stock issued upon exercise of options | 3,286 | 7 | 3,279 | 0 | 0
Common stock issued upon exercise of options (in shares) | 645 | 645 |  |  |
Common stock issued upon cashless exercise of warrants | 0 | 5 | (5) |  |
Common stock issued upon cashless exercise of warrants (in shares) |  | 485 |  |  |
Stock-based compensation | 4,721 | 0 | 4,721 |  |
Unvested restricted stock | 3 | 3 | 0 |  |
Unvested restricted stock (in shares) |  | 341 |  |  |
Vested restricted stock | 0 | 0 | 0 | 0 | 0
Vested restricted stock (in shares) |  | 17 |  |  |
Balance at Jan. 03, 2014 | $ 38,852 | $ 379 | $ 170,246 | $ 282 | $ (132,055)
Balance (in shares) at Jan. 03, 2014 |  | 37,911 |  |  |

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