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v3.20.2

Commitments, Guarantees and Contingencies (Details Textual) | 6 Months Ended
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Jun. 30, 2020
Commitments And Contingencies Disclosure [Abstract] |
Warranty Period | 90 days

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- Definition Typical warranty period from delivery of the solution or offering. + References No definition available. + Details
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Namespace Prefix: | csgs_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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