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Share-Based Compensation	3 Months Ended
Share-Based Compensation	Mar. 31, 2016
Share-Based Compensation [Abstract]
Share-Based Compensation	(7) Share-Based Compensation The Company’s share-based compensation plan is described, and informational disclosures are provided, in the Notes to Consolidated Financial Statements included in the Form 10-K for the year ended December 31, 2015. In the first three months of 2016 and 2015, 483,387 and 291,500 restricted stock units were granted at weighted-average per share prices of $19.14 and $23.35, respectively. During the first three months of 2016 and 2015, the Company awarded 274,000 and 259,000 stock options at weighted-average exercise prices of $16.20 and $16.07 per share, respectively. The options expire ten years after the grant date. Both the restricted stock units and options granted in 2016 and 2015 vest upon the achievement of defined performance targets.