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Stock Incentive Compensation and Employee Benefit Plans (Schedule of Option Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Weighted options outstanding |  |  |
Beginning balance (in shares) | 32,001 | 206,795 |
Options granted (in shares) | 0 | 0 |
Options forfeited (in shares) | 0 | 0 |
Options expired (in shares) | 0 | 0 |
Options exercised (in shares) | (32,001) | (174,794) |
Ending balance (in shares) | 0 | 32,001 | 206,795
Weighted average exercise price |  |  |
Beginning balance (in usd per share) | $ 53.86 | $ 53.17 |
Options granted (in usd per share) | 0 | 0 |
Options forfeited (in usd per share) | 0 | 0 |
Options expired (in usd per share) | 0 | 0 |
Options exercised (in usd per share) | 53.86 | 53.04 |
Ending balance (in usd per share) | $ 0 | $ 53.86 | $ 53.17
Weighted average remaining contractual life | 0 years | 2 months 12 days | 10 months 24 days
Aggregate intrinsic value, Options outstanding | $ 0 | $ 2,295 | $ 17,174
Aggregate intrinsic value, Options exercised | $ 2,320 | $ 15,945 |
Range of exercise prices, lower range limit (in usd per share) |  |  | $ 50.71
Range of exercise prices, upper range limit (in usd per share) |  |  | $ 59.66
Range of exercise prices, Options exercised, lower range limit (in usd per share) |  | $ 50.71 |
Range of exercise prices, Options exercised, upper range limit (in usd per share) |  | 59.66 |
Range of exercise prices, Options exercised (in usd per share) | $ 53.86 |  |
Range of exercise prices, Total options outstanding (in usd per share) | $ 0 | $ 53.86 |

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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into 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 (d)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + 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)(4) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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