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Net Income Per Share (Tables) | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Schedule of Net Income Per Share |
| Year Ended December 31,
| 2020 |  | 2019
Numerator (in millions): |  |  |
Net income (loss) | $ | 54.4 |  |  | $ | (16.5) |
Preferred stock dividends - undeclared and cumulative | 6.7 |  |  | 7.8 |
Distributed earnings allocable to retired preferred shares | 41.9 |  |  | $ | — |
Net income (loss) allocable to common stockholders | $ | 5.8 |  |  | $ | (24.3) |
Denominator (in thousands): |  |  |
Average common shares outstanding - basic | 9,825 |  |  | 9,566 |
Potentially dilutive shares related to stock options and restricted stock units (a) | 298 |  |  | — |
Average common shares outstanding - diluted | 10,123 |  |  | 9,566 |
Net income (loss) per common share (in dollars): |  |  |
Basic | $ | 0.59 |  |  | $ | (2.54) |
Diluted | $ | 0.57 |  |  | $ | (2.54) |
(a) Common stock equivalents excluded from the diluted calculation as a result of a net loss in the period (in thousands) | — |  |  | 67 |
Options outstanding and considered anti-dilutive as their exercise price exceeded the average share market price (in thousands) | — |  |  | 352 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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