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Loss Per Share | 12 Months Ended
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Dec. 31, 2021
Earnings Per Share [Abstract] |
Loss Per Share | Loss Per Share The reconciliation of basic and diluted earnings per share for each period presented was as follows (dollars and shares in thousands, except per share amounts):
| Year ended December 31,
| 2021 |  | 2020
Net loss attributable to common stockholders | $ | (82,651) |  |  | $ | (96,889) |
Basic - weighted average shares outstanding | 5,643 |  |  | 5,577 |
Dilutive effect of stock options and restricted stock | — |  |  | — |
Dilutive effect of convertible 2025 Notes | — |  |  | — |
Diluted - weighted average shares outstanding | 5,643 |  |  | 5,577 |
Loss per share |  |  |
Basic | $ | (14.65) |  |  | $ | (17.37) |
Diluted | $ | (14.65) |  |  | $ | (17.37) |
For all periods presented, we excluded all potentially dilutive restricted shares and stock options in calculating diluted earnings per share as the effect was anti-dilutive due to net losses incurred for these periods.

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