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v3.20.1

Segment And Geographic Information (Narrative) (Details) | 12 Months Ended
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Dec. 31, 2019 segment item
Segment And Geographic Information [Abstract] |
Number of Co-CEOs | item | 2
Number of reportable segments based on geographical locations | segment | 3

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- Definition Number of Co-Chief Executive Officers. + References No definition available. + Details
Name: | cnty_NumberOfCoChiefExecutiveOfficers
Namespace Prefix: | cnty_
Data Type: | xbrli:positiveIntegerItemType
Balance Type: | na
Period Type: | instant

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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration