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Share-Based Payment Arrangements (Tables) | 9 Months Ended
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Sep. 30, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary of Option Activity |
|  |  |  |  |  |  |  |  |  | Weighted |  |  |  |  |
|  |  |  |  |  | Weighted |  |  | Average |  |  |  |  |
|  |  |  |  |  | Average |  |  | Remaining |  |  | Aggregate |
|  | Number of |  |  | Exercise |  |  | Contractual |  |  | Intrinsic |
Options |  | Shares |  |  | Price |  |  | Term (Years) |  |  | Value ($000) |
Outstanding at January 1, 2019 |  |  | 46,865 |  |  | $ | 31.88 |  |  |  | 2.6 |  |  | $ | 164 |
Former MidSouth options converted at acquisition |  |  | 20,530 |  |  |  | 46.76 |  |  |  |  |  |  |  | — |
Exercised/Released |  |  | (18,969 | ) |  |  | 31.54 |  |  |  |  |  |  |  | 172 |
Cancelled/Forfeited |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |
Expired |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |
Outstanding at September 30, 2019 |  |  | 48,426 |  |  | $ | 38.32 |  |  |  | 1.5 |  |  | $ | 174 |
Exercisable at September 30, 2019 |  |  | 48,426 |  |  | $ | 38.32 |  |  |  | 1.5 |  |  | $ | 174 |
Summary of Nonvested Restricted and Performance Shares |
|  |  |  |  |  | Weighted |
|  |  |  |  |  | Average |
|  | Number of |  |  | Grant Date |
|  | Shares |  |  | Fair Value |
Nonvested at January 1, 2019 |  |  | 1,494,041 |  |  | $ | 39.89 |
Granted |  |  | 102,221 |  |  |  | 35.74 |
Vested |  |  | (35,353 | ) |  |  | 40.96 |
Forfeited |  |  | (53,525 | ) |  |  | 39.22 |
Nonvested at September 30, 2019 |  |  | 1,507,384 |  |  | $ | 39.60 |

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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + 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) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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 (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: 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) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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