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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Retained Earnings [Member]
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 0 398
Other comprehensive 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      
Common stock issued upon cashless exercise of warrants 0 $ 5 (5) 0 0
Common stock issued upon cashless exercise of warrants (in shares)   485      
Stock-based compensation 4,721 $ 0 4,721 0 0
Stock-based compensation (in shares)   0      
Unvested restricted stock 3 $ 3 0 0 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      
Net income (loss) (8,392) $ 0 0 0 (8,392)
Other comprehensive loss (1,352) 0 0 (1,352) 0
Common stock issued upon exercise of options 3,022 $ 5 3,017 0 0
Common stock issued upon exercise of options (in shares)   584      
Stock-based compensation 4,969 $ 0 4,969 0 0
Stock-based compensation (in shares)   0      
Unvested restricted stock (3) $ (3) 0 0 0
Unvested restricted stock (in shares)   (341)      
Vested restricted stock 3 $ 3 0 0 0
Vested restricted stock (in shares)   275      
Balance at Jan. 02, 2015 37,099 $ 384 178,232 (1,070) (140,447)
Balance (in shares) at Jan. 02, 2015   38,429      
Net income (loss) (6,533) $ 0 0 0 (6,533)
Other comprehensive loss (510) 0 0 (510) 0
Common stock issued upon exercise of warrants 2,800 $ 7 2,793 0 0
Common stock issued upon exercise of warrants (in shares)   700      
Common stock issued upon exercise of options $ 2,168 $ 5 2,163 0 0
Common stock issued upon exercise of options (in shares) 476 476      
Stock-based compensation $ 3,820 $ 0 3,820 0 0
Stock-based compensation (in shares)   0      
Unvested restricted stock 0 $ 1 (1) 0 0
Unvested restricted stock (in shares)   124      
Vested restricted stock 2 $ 2 0 0 0
Vested restricted stock (in shares)   158      
Balance at Jan. 01, 2016 $ 38,846 $ 399 $ 187,007 $ (1,580) $ (146,980)
Balance (in shares) at Jan. 01, 2016   39,887