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Treasury Stock - Narrative (Details) - USD ($) | Dec. 31, 2018 | Oct. 30, 2018
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Equity, Class of Treasury Stock [Line Items] |  |
Share value available for repurchase | $ 4,400,000 |
Share Repurchase Program - Authorized October 30, 2018 |  |
Equity, Class of Treasury Stock [Line Items] |  |
Amount of common stock authorized for purchase under repurchase plan |  | $ 5,000,000.0

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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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