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v3.19.1

Revenue Recognition (Schedule of Contract Assets and Liabilities) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Opening [Member] |  |
Contract Receivables and Liabilities [Line Items] |  |
Receivables | $ 305 | $ 266
Contract Liability | 219 | 235
Closing [Member] |  |
Contract Receivables and Liabilities [Line Items] |  |
Receivables | 320 | 286
Contract Liability | 214 | 212
Increase/(Decrease) [Member] |  |
Contract Receivables and Liabilities [Line Items] |  |
Receivables | 15 | 20
Contract Liability | $ (5) | $ (23)

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- Definition Contract Receivables and Liabilities [Line Items] + References No definition available. + Details
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Namespace Prefix: | cnty_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of decrease in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time from transfer to receivable due to right to consideration becoming unconditional. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130551-203045 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045 + Details
Name: | us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_TimingOfTransferOfGoodOrServiceAxis=cnty_IncreaseDecreaseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |