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Stock-Based Compensation | 3 Months Ended
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Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-Based Compensation | Stock-Based Compensation The company’s 2013 Omnibus Incentive Plan (the “2013 Omnibus Plan”) was approved by shareholders on May 7, 2013 and replaced the 2003 Incentive Stock and Awards Plan (the “2003 Stock Plan”), and the 2004 Non-Employee Director Stock and Awards Plan (the “2004 Stock Plan”). The 2013 Omnibus Plan also replaced the company's Short-Term Incentive Plan (the “STIP”) as of December 31, 2013. The 2003 Stock Plan, the 2004 Stock Plan and the STIP are referred to as the “Prior Plans.” No new awards may be granted under the Prior Plans after the respective termination dates; however, outstanding awards under the Prior Plans will continue in force and effect until vested, exercised, forfeited, or expired pursuant to their terms. The 2013 Omnibus Plan provides for both short-term and long-term incentive awards for employees and non-employee directors. Stock-based awards may take the form of stock options, stock appreciation rights, restricted stock, restricted stock units, and performance share or performance unit awards. The total number of shares of the company’s common stock originally available for awards under the 2013 Omnibus Plan is 8.0 million shares and is subject to adjustment for stock splits, stock dividends and certain other transactions or events in the future. Stock-based compensation expense was $5.2 million and $4.5 million for the three months ended March 31, 2015 and 2014, respectively. The company granted options to acquire 0.6 million and 0.3 million shares of common stock to employees during the three months ended March 31, 2015 and 2014, respectively. In addition, the company issued a total of 0.5 million restricted stock units to employees and directors during the three months ended March 31, 2015, and 0.1 million shares of restricted stock units to employees and directors during the three months ended March 31, 2014. The restricted stock units granted to employees vest on the third anniversary of the grant date. The restricted stock units granted to directors vest on the second anniversary of the grant date. The company recognizes stock-based compensation expense over the stock-based awards’ vesting period.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 + Details
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