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Revenue Recognition (Tables) | 12 Months Ended
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Dec. 31, 2018
Revenue Recognized From Liability Balances |
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﻿ | Year ended December 31,
﻿ | 2018 |  | 2017 |  | 2016
﻿Revenue recognized from gift card liability balance at the beginning of the year | $ | 36,094 |  | $ | 37,109 |  | $ | 32,744
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Gift Card [Member] |
Unearned Revenue/Receivables On Consolidated Balance Sheets |
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﻿ | December 31,
﻿ | 2018 |  | 2017
﻿Gift card liability | $ | 70,474 |  | $ | 63,645
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