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Basis of Presentation and Significant Accounting Policies (Tables) | 3 Months Ended
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Mar. 31, 2020
Accounting Policies [Abstract] |
Schedule of Contract and Contract - Related Liabilities | The following table summarizes the activity related to contract and contract-related liabilities:
| Outstanding Chip Liability |  |  | Loyalty Program |  |  | Customer Advances and Other |
| 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
| (in thousands) |
Balance at January 1 | $ | 314,570 |  |  | $ | 323,811 |  |  | $ | 126,966 |  |  | $ | 113,293 |  |  | $ | 481,095 |  |  | $ | 667,285 |
Balance at March 31 |  | 301,333 |  |  |  | 307,912 |  |  |  | 128,650 |  |  |  | 119,033 |  |  |  | 371,479 |  |  |  | 613,764 |
Increase / (decrease) | $ | (13,237 | ) |  | $ | (15,899 | ) |  | $ | 1,684 |  |  | $ | 5,740 |  |  | $ | (109,616 | ) |  | $ | (53,521 | )

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045 + Details
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