Net Income Per Common Share

6 Months Ended

Jun. 30, 2012

Earnings Per Share [Abstract]

Net Income Per Common Share

Net Income Per Common Share

For the purpose of computing diluted income from continuing operations and net income per common share, the weighted-average number of common shares outstanding is increased for the potential dilutive effects of stock-based incentive plans and convertible senior subordinated notes. For the purpose of computing diluted income from continuing operations and net income per common share, the weighted-average number of common shares was increased by 607,708 and 874,100 for the three-month periods ended June 30, 2012 and 2011, respectively, and 628,826 and 881,019 for the six-month periods ended June 30, 2012 and 2011, respectively, to account for the potential dilutive effect of stock-based incentive plans. There were no adjustments to income from continuing operations or net income for the purposes of computing income available to common stockholders for those periods.

The calculation of weighted-average diluted shares outstanding excludes all shares that would have been anti-dilutive. During the three-month periods ended June 30, 2012 and 2011, the Company excluded 320,313 and 702,958 stock options, respectively, from the calculation of weighted average diluted shares outstanding as the stock options would have been anti-dilutive. During the six-month periods ended June 30, 2012 and 2011, the Company excluded 313,713 and 923,821 stock options, respectively, from the calculation of weighted average diluted shares outstanding as the stock options would have been anti-dilutive.

The Company granted 101,000 stock options, 161,204 restricted stock unit awards and 103,160 performance share awards in February 2012 as part of its annual grant award. All of the stock options and the restricted stock unit awards vest upon meeting certain service conditions. The restricted stock unit awards are included in basic average common shares outstanding as they contain nonforfeitable rights to dividend payments. The performance share awards are part of a long-term Relative Measure program, which is designed to assess the Company's performance relative to the performance of companies included in the Russell 2000 Index over the three-year term of the program ending December 31, 2014. The performance goals are independent of each other and based on three metrics: the Company's total shareholder return ("TSR"), basic earnings per share growth and operating income before depreciation and amortization growth (weighted equally). The participants can earn from zero to 250% of the target award and the award includes a forfeitable right to dividend equivalents, which are not included in the aggregate target award numbers. The fair value of the TSR portion of the performance share awards was determined using a Monte Carlo valuation method as the award contains a market condition.

The 3.375% convertible senior subordinated notes due in March 2027 (the “3.375% Convertible Notes”) are convertible, under certain circumstances, into a combination of cash and common stock of the Company. The conversion price as of June 30, 2012 was approximately $28.31 per share of common stock. The dilutive effect of the notes is determined based on the average closing price of the Company's stock for the last 30 trading days of the quarter as compared to the conversion price of the notes. Under the net share settlement method, there were no potential shares issuable under the notes as the notes would have been anti-dilutive for the three- and six-month periods ended June 30, 2012 and 2011.

Effective April 5, 2011, the Company, through the trustee of its 3.75% convertible senior subordinated notes due in August 2025 (the "3.75% Convertible Notes"), exercised its right to redeem the remaining $92,500 principal amount of these notes under their indenture agreement. The Company elected to pay cash to holders of the notes surrendered for conversion, including the value of any residual shares of common stock that were payable to the holders electing to convert their notes into an equivalent share value. Accordingly, the potential shares issuable for the 3.75% Convertible Notes were not included in either basic or diluted weighted average common shares outstanding for the three- and six-month periods ended June 30, 2011.