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Earnings Per Share (EPS Computations) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Apr. 01, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Less: Loss (earnings) allocated to unvested restricted stock | $ (6,167) | $ 6,397 | $ 6,766 | $ 2,200 |
Income (loss) attributable to common stockholders | 8 | (18) | (13) | (8) |
Income (loss) attributable to common stockholders | $ (6,159) | $ 6,379 | $ 6,753 | $ 2,192 |
Denominator [Abstract] |  |  |  |  |
Denominator for basic earnings per common share - weighted average shares outstanding | 17,967,000 | 17,860,000 | 17,966,000 | 17,833,000 |
Weighted average number of common and common equivalent shares outstanding for diluted EPS computation | 18,511,000 | 17,889,000 | 18,364,000 | 17,862,000 |
Basic and Diluted earnings per common share: |  |  |  |  |
Continuing operations (in dollars per Share) | $ (0.34) | $ 0.36 | $ 0.38 | $ 0.12 |
Continuing operations (in dollars per Share) | $ (0.33) | $ 0.36 | $ 0.37 | $ 0.12 |
Share price (in USD per share) |  |  |  |  | $ 35.80
Stock options |  |  |  |  |
Denominator [Abstract] |  |  |  |  |
Effect of dilutive securities, share options (in shares) | 213,000 | 29,000 | 232,000 | 29,000 |
Basic and Diluted earnings per common share: |  |  |  |  |
Antidilutive securities excluded from computation of diluted EPS | 0 | 1,017,383 |  | 1,025,734 |
Performance awards |  |  |  |  |
Denominator [Abstract] |  |  |  |  |
Effect of dilutive securities, share options (in shares) | 331,000 | 0 | 166,000 | 0 |

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