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Shareholders’ Equity (Tables) | 3 Months Ended
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Mar. 31, 2020
Stockholders' Equity Note [Abstract] |
Common and Preferred Stock Activity | The Common and Preferred Stock table below contains additional information about preferred stock conversions during the three months ended March 31, 2020 and 2019.
| Preferred stock |  | Common stock
Common and Preferred Stock Activity (in shares): | Series A Convertible |  | Treasury |  | Outstanding
Beginning balance as of December 31, 2019 | 67,323 |  |  | 7,186,521 |  |  | 89,185,661 |
Conversion of convertible preferred stock | (1,182 | ) |  | — |  |  | 118,146 |
Issuance for share-based compensation plans | — |  |  | — |  |  | 157,158 |
Ending balance as of March 31, 2020 | 66,141 |  |  | 7,186,521 |  |  | 89,460,965 |
Beginning balance as of December 31, 2018 | 71,967 |  |  | 7,186,521 |  |  | 88,103,440 |
Conversion of convertible preferred stock | (3,023 | ) |  | — |  |  | 302,255 |
Issuance for share-based compensation plans | — |  |  | — |  |  | 402,062 |
Ending balance as of March 31, 2019 | 68,944 |  |  | 7,186,521 |  |  | 88,807,757 |

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- Definition Tabular disclosure of the change in preferred stock, treasury stock and common stock outstanding. + References No definition available. + Details
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