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Share-Based Compensation - Summary of Share-Based Compensation Expenses (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Summary of share-based compensation expense |  |  |  |
Share-based compensation before income tax benefit | $ 59 | $ 1,202 | $ 1,562 | $ 3,569
Income tax benefit | (17) | (445) | (587) | (1,326)
Total share-based compensation, net of income tax benefit | 42 | 757 | 975 | 2,243
Restricted stock/performance-based restricted stock (PBRS) |  |  |  |
Summary of share-based compensation expense |  |  |  |
Share-based compensation before income tax benefit | 653 | 802 | 2,066 | 2,522
Performance unit incentive plan (PUP) |  |  |  |
Summary of share-based compensation expense |  |  |  |
Share-based compensation before income tax benefit | (600) | 347 | (505) | 871
Restricted Stock Units and Performance Based Restricted Stock Units |  |  |  |
Summary of share-based compensation expense |  |  |  |
Share-based compensation before income tax benefit | 6 | 3 | 1 | 104
Stock options |  |  |  |
Summary of share-based compensation expense |  |  |  |
Share-based compensation before income tax benefit | $ 0 | $ 50 | $ 0 | $ 72

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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 amount of expense, net of income tax, 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 No definition available. + 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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