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COMMON STOCK AND STOCK INCENTIVE PLANS (Tables) | 12 Months Ended
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Dec. 31, 2014
COMMON STOCK AND STOCK INCENTIVE PLANS [Abstract] |
Summary of stock options activity |
|  | Number of shares outstanding |  |  | Weighted average exercise price |
|  | (in thousands) |  |  |  |
Options Outstanding, January 1, 2012 |  |  | 1,127 |  |  | $ | 23.52 |
Options Granted |  |  | 246 |  |  |  | 3.24 |
Options Exercised |  |  | — |  |  |  | — |
Options Forfeited or Expired |  |  | (443 | ) |  |  | 19.56 |
Options Outstanding, December 31, 2012 |  |  | 930 |  |  | $ | 20.04 |
Options Granted |  |  | — |  |  |  | — |
Options Exercised |  |  | — |  |  |  | — |
Options Forfeited or Expired |  |  | (354 | ) |  |  | 18.05 |
Options Outstanding, December 31, 2013 |  |  | 576 |  |  | $ | 21.25 |
Options Granted |  |  | 127 |  |  |  | 2.83 |
Options Exercised |  |  | — |  |  |  | — |
Options Forfeited or Expired |  |  | (145 | ) |  |  | 62.79 |
Options Outstanding, December 31, 2014 |  |  | 558 |  |  | $ | 6.33 |
Summary of unvested restricted awards |
|  | Shares |  |  | Weighted average grant date fair value |
|  | (in thousands) |  |  |  |
Restricted stock awards activity |  |  |  |  |  |  |  |
Total nonvested at January 1, 2012 |  |  | 902 |  |  | $ | 5.87 |
Granted |  |  | 1,891 |  |  | $ | 3.29 |
Vested |  |  | (701 | ) |  | $ | 5.60 |
Forfeited |  |  | (390 | ) |  | $ | 4.49 |
Total nonvested at December 31, 2012 |  |  | 1,702 |  |  | $ | 3.43 |
Reverse split adjustment |  |  | 25 |  |  | $ | — |
Granted |  |  | 679 |  |  | $ | 2.76 |
Vested |  |  | (520 | ) |  | $ | 3.72 |
Forfeited |  |  | (173 | ) |  | $ | 3.82 |
Total nonvested at December 31, 2013 |  |  | 1,713 |  |  | $ | 3.08 |
Granted |  |  | 808 |  |  | $ | 2.76 |
Vested |  |  | (603 | ) |  | $ | 3.15 |
Forfeited |  |  | (437 | ) |  | $ | 3.02 |
Total nonvested at December 31, 2014 |  |  | 1,481 |  |  | $ | 2.90 |
Summary of significant ranges of outstanding and exercisable stock options |
Range of Exercise Price |  |  | Numbers Outstanding as of Dec. 31, 2014 |  |  | Weighted Average Remaining Contractual Term |  |  | Weighted Average Exercise Price |  |  | Numbers Exercisable as of Dec. 31, 2014 |  |  | Weighted Average Exercise Price |
$ | 2.70 |  |  | $ | 2.70 |  |  |  | 26,666 |  |  |  | 9.91 |  |  | $ | 2.70 |  |  |  | 0 |  |  | $ | — |
$ | 2.87 |  |  | $ | 2.87 |  |  |  | 100,000 |  |  |  | 9.64 |  |  | $ | 2.87 |  |  |  | 0 |  |  | $ | — |
$ | 2.97 |  |  | $ | 2.97 |  |  |  | 26,666 |  |  |  | 4.83 |  |  | $ | 2.97 |  |  |  | 13,332 |  |  | $ | 2.97 |
$ | 3.21 |  |  | $ | 3.21 |  |  |  | 191,054 |  |  |  | 4.49 |  |  | $ | 3.21 |  |  |  | 104,386 |  |  | $ | 3.21 |
$ | 4.17 |  |  | $ | 6.51 |  |  |  | 88,236 |  |  |  | 2.22 |  |  | $ | 5.28 |  |  |  | 83,792 |  |  | $ | 5.34 |
$ | 8.46 |  |  | $ | 9.72 |  |  |  | 40,325 |  |  |  | 0.54 |  |  | $ | 9.53 |  |  |  | 40,325 |  |  | $ | 9.53 |
$ | 18.75 |  |  | $ | 18.75 |  |  |  | 78,636 |  |  |  | 1.13 |  |  | $ | 18.75 |  |  |  | 78,636 |  |  | $ | 18.75 |
$ | 19.83 |  |  | $ | 24.57 |  |  |  | 4,786 |  |  |  | 0.69 |  |  | $ | 20.60 |  |  |  | 4,786 |  |  | $ | 20.60 |
$ | 26.61 |  |  | $ | 26.61 |  |  |  | 116 |  |  |  | 0.92 |  |  | $ | 26.61 |  |  |  | 116 |  |  | $ | 26.61 |
$ | 33.21 |  |  | $ | 33.21 |  |  |  | 1,730 |  |  |  | 0.25 |  |  | $ | 33.21 |  |  |  | 1,730 |  |  | $ | 33.21 |
Total |  |  |  |  |  |  |  | 558,215 |  |  |  | 4.53 |  |  | $ | 6.33 |  |  |  | 327,103 |  |  | $ | 8.68 |
|  | Number of shares |  |  | Weighted average exercise price |
Options exercisable at December 31, 2014 |  |  | 327,103 |  |  | $ | 8.68 |
Options vested and expected to vest at December 31, 2014 |  |  | 500,275 |  |  | $ | 6.71 |
Summary of the stock-based compensation expense recognized in the Company's Consolidated Statement of Operations |
|  | Years ended December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
|  | (in thousands) |
Cost of net sales |  | $ | 60 |  |  | $ | 7 |  |  | $ | 107 |
Selling, general and administrative |  |  | 2,185 |  |  |  | 1,597 |  |  |  | 2,398 |
Research and development |  |  | 44 |  |  |  | 94 |  |  |  | 476 |
Total |  | $ | 2,289 |  |  | $ | 1,698 |  |  | $ | 2,981 |

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