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Earnings Per Share - Shares Included in Diluted Earnings Per Share Computations (Details) - shares |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Dec. 21, 2016 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Earnings Per Share [Line Items] |  |  |  |  |
Weighted average shares of common stock outstanding – basic (in shares) |  | 34,643,754 | 32,917,007 | 34,555,124 | 32,672,793
Weighted average shares of common stock outstanding – diluted (in shares) |  | 37,792,266 | 38,387,700 | 37,816,698 | 38,010,838
Shares held back in merger to secure indemnification (as a percent) | 10.00% | 10.00% | 10.00% | 10.00% | 10.00%
Stock options |  |  |  |  |
Earnings Per Share [Line Items] |  |  |  |  |
Adjustments to weighted average shares of common stock (in shares) |  | 299,536 | 648,724 | 307,665 | 633,131
10% shares held back pursuant to indemnification clause |  |  |  |  |
Earnings Per Share [Line Items] |  |  |  |  |
Adjustments to weighted average shares of common stock (in shares) |  | 1,511,332 | 3,039,609 | 1,511,332 | 3,039,609
Warrants |  |  |  |  |
Earnings Per Share [Line Items] |  |  |  |  |
Adjustments to weighted average shares of common stock (in shares) |  | 1,337,644 | 1,782,360 | 1,442,577 | 1,665,305

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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://fasb.org/us-gaap/role/ref/legacyRef -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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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + 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 (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=109260490&loc=d3e1505-109256 + Details
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