Stockholders' Equity - Shareholder Rights Plan (Details) |
Mar. 31, 2020
$ / shares
shares
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Sep. 30, 2020
$ / shares
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Jun. 27, 2020
$ / shares
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Dec. 31, 2019
$ / shares
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|---|---|---|---|---|
| Equity [Abstract] | ||||
| Shareholder rights plan, ownership trigger threshold | 15.00% | |||
| Right dividend declared, per share of common stock held | 1 | |||
| Common stock, par value (in dollars per share) | $ 1.00 | $ 1 | $ 1.00 | $ 1 |
| Number of securities called by each right (in shares) | shares | 0.5 | |||
| Right, common stock purchase price (in dollars per share) | $ 22.50 | |||
| Right, common stock purchase price, full right equivalent (in dollars per share) | $ 45.00 |
| X | ||||||||||
- Definition Class Of Warrant Or Right, Exercise Price Of Warrants Or Rights, Equivalent Of Full Right No definition available.
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| X | ||||||||||
- Definition Common Stock, Dividends, Class Of Warrant Or Right No definition available.
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| X | ||||||||||
- Definition Shareholder Rights Plan, Ownership Trigger Threshold No definition available.
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| X | ||||||||||
- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. No definition available.
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| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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