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Earnings (Loss) Per Share (Tables) | 9 Months Ended
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Sep. 30, 2018
Earnings (Loss) Per Share [Abstract] |
Summary of weighted-average number of shares used in the calculation of basic and diluted earnings per share |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
|  | (in thousands) |
Basic weighted-average number of shares |  |  | 24,805 |  |  |  | 23,567 |  |  |  | 24,895 |  |  |  | 23,495 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options and warrants |  |  | 181 |  |  |  | — |  |  |  | 68 |  |  |  | — |
Non-vested restricted Class B common stock |  |  | 456 |  |  |  | 591 |  |  |  | 262 |  |  |  | — |
Diluted weighted-average number of shares |  |  | 25,442 |  |  |  | 24,158 |  |  |  | 25,225 |  |  |  | 23,495 |
Summary of shares were excluded from the diluted earnings per share |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
|  | (in thousands) |
Stock options and warrants |  |  | 341 |  |  |  | 383 |  |  |  | 341 |  |  |  | 383 |
Non-vested restricted Class B common stock |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,205 |
Shares excluded from the calculation of diluted earnings per share |  |  | 341 |  |  |  | 383 |  |  |  | 341 |  |  |  | 1,588 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + 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 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + 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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