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NET INCOME PER COMMON SHARE NET INCOME PER COMMON SHARE (Tables) | 9 Months Ended
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Sep. 30, 2013
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | The following table is a reconciliation of net income and the shares used in calculating basic and diluted net income per common share for the nine months ended September 30, 2013 and 2012 (in thousands, except for share and per share data):
|  | 2013 |  | 2012
Numerator: |  |  |  |
Net income |  | $ | 16,166 |  |  | $ | 4,275 |
Denominator: |  |  |  |
Weighted average common shares outstanding - Basic |  | 45,865,395 |  |  | 45,916,536 |
Effect of dilutive shares: |  |  |  |
Common stock equivalents arising from stock options, warrants and ESPP |  | 500,749 |  |  | 701,351 |
Restricted stock awards and units and performance units |  | 181,424 |  |  | 294,670 |
Weighted average common shares outstanding - Diluted |  | 46,547,568 |  |  | 46,912,557 |
Net income per common share: |  |  |  |
Basic |  | $ | 0.35 |  |  | $ | 0.09 |
Diluted |  | $ | 0.35 |  |  | $ | 0.09 |
The following table is a reconciliation of net income (loss) and the shares used in calculating basic and diluted net income (loss) per common share for the three months ended September 30, 2013 and 2012 (in thousands, except for share and per share data):
|  | 2013 |  | 2012
Numerator: |  |  |  |
Net income (loss) |  | $ | 5,542 |  |  | $ | (5,468 | )
Denominator: |  |  |  |
Weighted average common shares outstanding - Basic |  | 45,912,512 |  |  | 46,006,290 |
Effect of dilutive shares: |  |  |  |
Common stock equivalents arising from stock options, warrants and ESPP |  | 494,536 |  |  | — |
Restricted stock awards and units and performance units |  | 187,795 |  |  | — |
Weighted average common shares outstanding - Diluted |  | 46,594,843 |  |  | 46,006,290 |
Net income (loss) per common share: |  |  |  |
Basic |  | $ | 0.12 |  |  | $ | (0.12 | )
Diluted |  | $ | 0.12 |  |  | $ | (0.12 | )

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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