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Common Stock - Narrative (Details) | Dec. 31, 2018 vote shares | Sep. 30, 2018 shares | Dec. 31, 2017 shares
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Equity [Abstract] |  |  |
Common Stock, votes per share (in votes) | vote | 1 |  |
Common stock, shares authorized (in shares) | shares | 490,000,000 | 490,000,000 | 150,000,000

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- Definition Common Stock, Voting Rights1 + References No definition available. + Details
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- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- References No definition available. + Details
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