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Basis of Presentation (Tables) | 6 Months Ended
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Jun. 30, 2011
Basis of Presentation |
Reconciliation of basic earnings (loss) per share ("EPS") to diluted EPS |
|  | Three Months Ended |  | Six Months Ended |
(in thousands, except) |  | June 30, |  | June 30, |
per-share amounts) |  | 2011 |  | 2010 |  | 2011 |  | 2010 |
Earnings from continuing operations, net of tax |  | $ | 19,493 |  | $ | 21,059 |  | $ | 26,571 |  | $ | 30,889 |
Loss from discontinued operations, net of tax |  | — |  | (14,356 | ) | — |  | (14,986 | )
Net income available to common stockholders |  | $ | 19,493 |  | $ | 6,703 |  | $ | 26,571 |  | $ | 15,903 |
Basic weighted average shares outstanding |  | 49,404 |  | 49,417 |  | 49,753 |  | 49,403 |
Dilutive effect of potential common stock equivalents — stock options |  | 52 |  | 181 |  | 56 |  | 156 |
Diluted weighted average shares outstanding |  | 49,456 |  | 49,598 |  | 49,809 |  | 49,559 |
Net earnings (loss) per share — basic: |  |  |  |  |  |  |  |  |
Continuing operations |  | $ | 0.39 |  | $ | 0.43 |  | $ | 0.53 |  | $ | 0.63 |
Discontinued operations |  | — |  | (0.29 | ) | — |  | (0.30 | )
Net income |  | 0.39 |  | 0.14 |  | 0.53 |  | 0.32 |
Net earnings (loss) per share — diluted: |  |  |  |  |  |  |  |  |
Continuing operations |  | $ | 0.39 |  | $ | 0.42 |  | $ | 0.53 |  | $ | 0.62 |
Discontinued operations |  | — |  | (0.29 | ) | — |  | (0.30 | )
Net income |  | 0.39 |  | 0.14 |  | 0.53 |  | 0.32 |
Potentially dilutive securities excluded from earnings per diluted share because their effect is anti-dilutive |  | 1,743 |  | 646 |  | 1,743 |  | 856 |
Stock option activity, including both continuing and discontinued operations of the entity |
|  | Three Months Ended |  | Six Months Ended |
|  | June 30, |  | June 30, |
(in thousands) |  | 2011 |  | 2010 |  | 2011 |  | 2010 |
Stock option expense recognized in operating expenses |  | $ | 845 |  | $ | 218 |  | $ | 2,293 |  | $ | 585 |
Tax benefit of stock option expense in provision for income taxes |  | 297 |  | 56 |  | 818 |  | 173 |
Stock option expense, net of tax |  | $ | 548 |  | $ | 162 |  | $ | 1,475 |  | $ | 412 |
Fair value of shares vested |  | $ | 837 |  | $ | 179 |  | $ | 2,118 |  | $ | 561 |
Proceeds to the Company from the exercise of stock options |  | $ | — |  | $ | 863 |  | $ | 154 |  | $ | 955 |
Tax effect from exercise of stock options, including shortfall tax benefits |  | $ | — |  | $ | (9 | ) | $ | (39 | ) | $ | (83 | )
|  |  |  |  |  | At June 30, |
|  |  |  |  |  | 2011 |  | 2010 |
Stock option cost capitalized in inventory |  |  |  |  |  | $ | 108 |  | $ | 44 |
Schedule of effective tax rates and income tax expense |
Three Months Ended |  | Six Months Ended |
(in thousands, except) |  | June 30, |  | June 30, |
percentage amounts) |  | 2011 |  | 2010 |  | 2011 |  | 2010 |
Effective tax rate |  | 37.6 | % | 37.8 | % | 39.0 | % | 39.2 | %
Provision for income taxes |  | $ | 11,754 |  | $ | 12,773 |  | $ | 17,016 |  | $ | 19,903 |

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- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (h)(1) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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