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Performance Incentive Plan (Restricted Stock Activity) (Details) | 12 Months Ended
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Dec. 31, 2019 $ / shares shares
Number of Shares |
Restricted shares granted (in shares) | shares | 28,127
Weighted Average Share Price |
Restricted shares granted (in dollars per share) | $ / shares | $ 53.47
Restricted stock |
Number of Shares |
Non-vested restricted shares, January 1 (in shares) | shares | 781,564
Restricted shares granted (in shares) | shares | 364,769
Restricted shares vested (in shares) | shares | (237,863)
Restricted shares forfeited (in shares) | shares | (5,119)
Non-vested restricted shares, December 31 (in shares) | shares | 903,351
Weighted Average Share Price |
Non-vested restricted shares, January 1 (in dollars per share) | $ / shares | $ 39.97
Restricted shares granted (in dollars per share) | $ / shares | 53.91
Restricted shares vested (in dollars per share) | $ / shares | 43.03
Restricted shares forfeited (in dollars per share) | $ / shares | 44.70
Non-vested restricted shares, December 31 (in dollars per share) | $ / shares | $ 44.77

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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Exercise Price + References No definition available. + Details
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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Exercise Price + References No definition available. + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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