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Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Jun. 25, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017
Numerator |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  | $ 2,673 |  |  |  |  | $ 563 |  | $ (4,961) |  | $ 902
Less: Net income attributable to non-controlling interests |  |  |  |  |  |  |  |  |  |  | 3,608 |  | 1,937 |  | 0
Net income attributable to Class A common stockholders | $ (930) | $ (1,191) | $ (1,102) | $ 178 | $ 834 | 736 | $ (564) | $ (6,836) | $ (332) | $ (7,634) | $ (3,045) |  | $ (6,898) |  | $ 902
Reallocation of net income assuming conversion of common units |  |  |  |  |  | 1,464 |  |  |  |  |  |  |  |  |
Net income attributable to Class A common stockholders - diluted |  |  |  |  |  | $ 2,200 |  |  |  |  |  |  |  |  |
Denominator |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares of Class A common stock outstanding (shares) |  |  |  |  |  | 8,812,630 |  |  |  |  |  |  |  |  |
Weighted average effect of dilutive securities (shares) |  |  |  |  |  | 18,061,248 |  |  |  |  |  |  |  |  |
Weighted average shares of Class A common stock outstanding - diluted (shares) |  |  |  |  |  | 26,873,878 |  |  |  |  | 10,490,981 | [1] | 26,873,878 | [1] |
Basic net income per share (in USD per Share) | $ (0.07) | $ (0.12) | $ (0.12) | $ 0.02 | $ 0.09 |  | $ (0.01) |  |  |  | $ (0.29) | [1] | $ 0.08 | [1] |
Diluted net income per share (in USD per share) | $ (0.07) | $ (0.12) | $ (0.12) | $ 0.02 | $ 0.09 | $ 0.08 | $ (0.01) |  |  |  | $ (0.29) | [1] | $ 0.08 | [1] |
Class A Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Numerator |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  | $ 2,673 |  |  |  |  | $ 563 |  |  |  |
Less: Net income attributable to non-controlling interests |  |  |  |  |  | 1,937 |  |  |  |  | 3,608 |  |  |  |
Net income attributable to Class A common stockholders |  |  |  |  |  | $ 736 |  |  |  |  | $ (3,045) |  |  |  |
Denominator |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares of Class A common stock outstanding (shares) |  |  |  |  |  | 8,812,630 |  |  |  |  | 10,490,981 |  |  |  |
Basic net income per share (in USD per Share) |  |  |  |  |  | $ 0.08 |  |  |  |  | $ (0.29) |  |  |  |
[1] | Basic and diluted net income per Class A common stock are presented only for the period after the Company’s Reorganization Transactions. See Note 1 for a description of the Reorganization Transactions. See Note 18 for the calculation of income per common share.

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