Per Share Data (Narrative) (Details) - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Earnings Per Share [Abstract] | |||
| Antidilutive securities excluded from computation of earnings per share, amount (in shares) | 22,105,065 | 25,107,164 | 32,501,007 |
| Accelerated shares (price per share) | $ 3.50 | ||
| X | ||||||||||
- Definition Final price paid per share for the purchase of the targeted number of shares, determined by an average market price over a fixed period of time. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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