v2.4.0.8

Share-Based Compensation Expense and Related Income Tax Benefit (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Schedule Of Employee Service Share Based Compensation Expense Allocation [Line Items] |  |  |  |  |  |  |  |
Total share-based compensation | $ 1,911 |  | $ 1,701 |  | $ 5,236 |  | $ 5,792 |
Income tax benefit | 576 |  | 524 |  | 1,637 |  | 1,738 |
Options |  |  |  |  |  |  |  |
Schedule Of Employee Service Share Based Compensation Expense Allocation [Line Items] |  |  |  |  |  |  |  |
Total share-based compensation | 318 |  | 737 |  | 1,323 |  | 2,922 |
Restricted stock units |  |  |  |  |  |  |  |
Schedule Of Employee Service Share Based Compensation Expense Allocation [Line Items] |  |  |  |  |  |  |  |
Total share-based compensation | 1,260 |  | 453 |  | 3,012 |  | 1,287 |
Performance Shares |  |  |  |  |  |  |  |
Schedule Of Employee Service Share Based Compensation Expense Allocation [Line Items] |  |  |  |  |  |  |  |
Total share-based compensation | 161 | [1] | 276 | [1] | 498 | [1] | 776 | [1]
ESPP |  |  |  |  |  |  |  |
Schedule Of Employee Service Share Based Compensation Expense Allocation [Line Items] |  |  |  |  |  |  |  |
Total share-based compensation | $ 172 |  | $ 235 |  | $ 403 |  | $ 807 |
[1] | Includes Performance Stock Units ("PSUs") and market-performance based units ("MSUs").

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -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 S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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