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Commitments, Contingencies And Other Matters (Narrative) (Details) $ in Thousands, zł in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended | 108 Months Ended |
--- | --- | --- | --- | --- | ---
May 31, 2018 PLN (zł) | May 31, 2018 USD ($) | Sep. 30, 2018 PLN (zł) | Sep. 30, 2018 USD ($) | Dec. 31, 2019 USD ($) item | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2019 PLN (zł) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 USD ($)
Commitments and Contingencies [Line items] |  |  |  |  |  |  |  |  |  |
Contingent liability |  |  |  |  |  | $ 829 |  |  |  | $ 334
Reduction to contingent liability |  |  |  |  |  |  |  | zł 2.2 |  | 600
Distribution to non-controlling interest |  |  |  |  | $ 989 | 642 | $ 2,043 |  |  |
Lot Polish Airlines Invesment [Member] |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line items] |  |  |  |  |  |  |  |  |  |
Awarded arbitration |  |  | zł 1.2 | $ 300 |  |  |  |  |  |
Casinos Poland [Member] |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line items] |  |  |  |  |  |  |  |  |  |
Income tax audit costs | zł 4.9 | $ 1,300 |  |  |  |  |  | 14.3 | $ 4,200 |
Century Downs Racetrack And Casino [Member] |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line items] |  |  |  |  |  |  |  |  |  |
Distribution to non-controlling interest |  |  |  |  | $ 400 | 600 | 600 |  |  |
Review of All Tax Open Periods [Member] |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line items] |  |  |  |  |  |  |  |  |  |
Contingent liability |  |  |  |  |  |  |  | zł 1.3 |  | $ 300
401K Plan [Member] |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line items] |  |  |  |  |  |  |  |  |  |
Vesting period for plan |  |  |  |  | 6 years |  |  |  |  |
Contributed to plan |  |  |  |  | $ 100 | 100 | 100 |  |  |
RSP And RPP Plans [Member] |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line items] |  |  |  |  |  |  |  |  |  |
Number of registered retirement plans in Canada | item |  |  |  |  | 2 |  |  |  |  |
Contributed to plan |  |  |  |  | $ 200 | $ 200 | $ 200 |  |  |
RPP Plan [Member] |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies [Line items] |  |  |  |  |  |  |  |  |  |
Vesting period for plan |  |  |  |  | 2 years |  |  |  |  |

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