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Stock-Based Compensation Stock-Based Compensation Details (Details) - USD ($) $ / shares in Units, $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2019 | Sep. 30, 2018
Stock-Based Compensation Details |  |
Employee Benefits and Share-based Compensation | $ 7,621 | $ 8,694
Minimum [Member] |  |
Stock-Based Compensation Details |  |
Equity Share Payout Range | 0 |
Maximum [Member] |  |
Stock-Based Compensation Details |  |
Equity Share Payout Range | 61,829 |
Share-based Compensation Award, Tranche Two [Member] |  |
Stock-Based Compensation Details |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted | 26,825 |
Share Based Compensation Non Option Equity Instruments Granted Weighted Average Exercise Price | $ 30.78 |

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- Definition Equity Share Payout Range + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

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- Definition Share Based Compensation Non Option Equity Instruments Granted Weighted Average Exercise Price + References No definition available. + Details
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- Definition Amount of expense for employee benefit and equity-based compensation. + References No definition available. + 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 Net number of non-option equity instruments granted to participants. + 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)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Details
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- Details
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