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Revenue Recognition - Summary of Impact of Adoption of the New Standard to Previously Reported Selected Financial Statement Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | [1] | Sep. 30, 2019 | [1] | Jun. 30, 2019 | Mar. 31, 2019 | [2] | Dec. 31, 2018 | [1] | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Revenue Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross revenues |  |  |  |  |  |  |  |  |  |  | $ 507,138
Net revenues |  |  |  |  |  |  |  |  |  |  | 507,138
Operating income | $ 10,500 | $ 9,881 | $ 14,022 | $ 11,714 | $ 5,468 | $ 9,723 | $ 19,095 | $ 16,681 | $ 46,117 | $ 50,967 | 15,291
Net income (loss) | $ (7,672) | $ (9,447) | $ (14,408) | $ (8,018) | $ (25,314) | $ (3,124) | $ 3,594 | $ 3,930 | $ (39,545) | $ (20,914) | 2,084
ASC 606 [Member] | As Reported |  |  |  |  |  |  |  |  |  |  |
Revenue Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross revenues |  |  |  |  |  |  |  |  |  |  | 538,676
Promotional allowances |  |  |  |  |  |  |  |  |  |  | (28,868)
Net revenues |  |  |  |  |  |  |  |  |  |  | 509,808
Operating income |  |  |  |  |  |  |  |  |  |  | 15,378
Net income (loss) |  |  |  |  |  |  |  |  |  |  | 2,171
ASC 606 [Member] | Adjustments |  |  |  |  |  |  |  |  |  |  |
Revenue Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross revenues |  |  |  |  |  |  |  |  |  |  | (31,538)
Promotional allowances |  |  |  |  |  |  |  |  |  |  | 28,868
Net revenues |  |  |  |  |  |  |  |  |  |  | (2,670)
Operating income |  |  |  |  |  |  |  |  |  |  | (87)
Net income (loss) |  |  |  |  |  |  |  |  |  |  | $ (87)
[1] | For all four quarters of 2019 and the third and fourth quarters of 2018, the Company generated a net loss. Accordingly, the effect of all potential common share equivalents was anti-dilutive, and therefore all such shares were excluded from the computation of diluted weighted average shares outstanding and diluted loss per share for this period. The number of potential common share equivalents was 1,048, 740, 730 and 1,168 for the first, second, third and fourth quarters of 2019, respectively. The number of potential common share equivalents was 1,870 and 1,028 for the third and fourth quarters of 2018, respectively.
[2] | Results included the operating results of the Laughlin Entities from January 14, 2019, following the completion of the Laughlin Acquisition.

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