XML 73 R34.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Net Income Per Share (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2013
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Net Income Per Share | The following table sets forth the computation of basic and diluted net income per share:
|  | Three Months Ended March 31, |
|  | 2013 |  |  | 2012 |
Numerator: |  |  |  |  |  |  |  |
Net income |  | $ | 5,761 |  |  | $ | 22,768 |
Denominator: |  |  |  |  |  |  |  |
Shares used in net income per common share – basic |  |  | 52,773,000 |  |  |  | 52,504,000 |
Effect of dilutive securities: |  |  |  |  |  |  |  |
Stock options, restricted stock and employee stock purchase plan |  |  | 586,000 |  |  |  | 718,000 |
Shares used in net income per common share – diluted |  |  | 53,359,000 |  |  |  | 53,222,000 |
Net income per common share: |  |  |  |  |  |  |  |
Basic |  | $ | 0.11 |  |  | $ | 0.43 |
Diluted |  | $ | 0.11 |  |  | $ | 0.43 |

X
- Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration