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Share Repurchase Program Share Repurchase Program (Narrative) (Details) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jul. 31, 2019 | Oct. 25, 2017 | Feb. 25, 2016
Related Party Transaction [Line Items] |  |  |  |  |  |
Authorized amount |  |  |  | $ 25,000,000 | $ 40,000,000.0 | $ 25,000,000.0
Authorized amount, additional |  |  |  |  | $ 15,000,000.0 |
Treasury stock acquired, shares | 400,000 | 1,101,969 | 574,054 |  |  |
Payments for repurchase of equity | $ 7,800,000 | $ 17,700,000 | $ 14,000,000 |  |  |
Average cost per share (in usd per share) | $ 19.39 | $ 16.03 | $ 24.35 |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 25,600,000 |  |  |  |  |

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- Definition The cash outflow to reacquire common and preferred stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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