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Share-based Compensation (Notes) | 9 Months Ended
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Sep. 30, 2013
Share-based Compensation [Abstract] |
Disclosure of Compensation Related Costs, Share-based Payments [Text Block] | Share-based Compensation During the nine months ended September 30, 2013, the Company granted 82 stock options, 48 shares of restricted stock and restricted stock units, 19 performance units and 22 leveraged restricted share units. Non-employee directors received 4 stock awards with a fair value of $290. During the nine months ended September 30, 2013, participants in the Company's stock option plans exercised options to purchase 312 shares of the Company's common stock. Stock options vest ratably over a four-year period. Restricted stock and restricted stock units generally vest ratably over a three-year period, and performance units and leveraged restricted share units vest at the end of a three-year performance period based on the achievement of certain performance and market conditions. During the nine months ended September 30, 2013, 82 restricted stock and restricted stock units vested while 2 restricted stock and restricted stock units were forfeited. Share-based compensation expense was $1,707 and $6,782 for the three and nine months ended September 30, 2013, respectively, and $1,530 and $5,711 for the three and nine months ended September 30, 2012, respectively. As of September 30, 2013, total share-based compensation of $12,480 is expected to be recognized over the weighted-average period of approximately 2.1 years assuming performance units are earned at their maximum payout potential.

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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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