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Earnings Per Share - Summary of Shares Included in Diluted Earnings Per Share (Details) - shares |  | 12 Months Ended
--- | --- | ---
Dec. 08, 2017 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |
Weighted average shares of common stock outstanding – basic (in shares) |  | 36,527,672 | 34,708,429 | 32,893,940
Weighted average shares of common stock outstanding – diluted (in shares) |  | 37,448,430 | 36,403,279 | 37,914,886
Shares held back in merger to secure indemnification (as a percent) | 10.00% | 10.00% | 10.00% | 10.00%
Common Stock |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |
Adjustments to weighted average shares of common stock (in shares) |  | 0 | 0 | 2,935,512
Warrants |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |
Adjustments to weighted average shares of common stock (in shares) |  | 717,029 | 1,384,078 | 1,625,994
Stock options |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |
Adjustments to weighted average shares of common stock (in shares) |  | 182,999 | 295,672 | 459,440
Management restricted stock awards (dilutive) | Management restricted stock awards (dilutive) |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |
Adjustments to weighted average shares of common stock (in shares) |  | 7,242 | 15,100 | 0
Management restricted stock awards (dilutive) | Executive restricted stock awards (dilutive) |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |
Adjustments to weighted average shares of common stock (in shares) |  | 13,488 | 0 | 0

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- Definition The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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