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Note 9 - Stockholders' Equity and Stock Incentive Plans - Share Based Payment Plan Compensation Costs (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Share-based compensation expense | $ 8,158 | $ 6,022 | $ 17,867 | $ 14,949
Selling, General and Administrative Expenses [Member] |  |  |  |
Share-based compensation expense | 849 | 669 | 1,837 | 1,541
Corporate Expense [Member] |  |  |  |
Share-based compensation expense | 7,095 | 5,184 | 15,567 | 13,019
Casino [Member] | Cost of Sales [Member] |  |  |  |
Share-based compensation expense | 167 | 131 | 361 | 303
Food and Beverage [Member] | Cost of Sales [Member] |  |  |  |
Share-based compensation expense | 32 | 25 | 69 | 58
Occupancy [Member] | Cost of Sales [Member] |  |  |  |
Share-based compensation expense | $ 15 | $ 13 | $ 33 | $ 28

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