XML 78 R67.htm IDEA: XBRL DOCUMENT
v3.20.2

Debt - Schedule of Current Debt Compliance with Covenant (Details) | 9 Months Ended
--- | ---
Sep. 30, 2020
Debt Disclosure [Abstract] |
Monthly minimum adjusted quick ratio, Non quarter-end months | 100.00%
Monthly minimum adjusted quick ratio, Quarter-end months | 115.00%
Consolidated fixed charge coverage ratio fourth quarter | 125.00%
Consolidated fixed charge coverage ratio first quarter of next year | 125.00%
Consolidated fixed charge coverage ratio second quarter of next year | 125.00%
Consolidated fixed charge coverage ratio third quarter of next year | 125.00%
Consolidated fixed charge coverage ratio description, twelve month | Trailing twelve-month
Consolidated leverage coverage ratio fourth quarter | 250.00%
Consolidated leverage coverage ratio first quarter of next year | 225.00%
Consolidated leverage coverage ratio second quarter of next year | 225.00%
Consolidated leverage coverage ratio third quarter of next year | 200.00%
Consolidated leverage ratio description, twelve month | Trailing twelve-month

X
- Definition Debt instrument consolidated fixed charge coverage ratio twelve month description. + References No definition available. + Details
Name: | cmbm_DebtInstrumentConsolidatedFixedChargeCoverageRatioTwelveMonthDescription
Namespace Prefix: | cmbm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt instrument consolidated leverage ratio twelve month description. + References No definition available. + Details
Name: | cmbm_DebtInstrumentConsolidatedLeverageRatioTwelveMonthDescription
Namespace Prefix: | cmbm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt instrument maximum consolidated leverage ratio first quarter of next year. + References No definition available. + Details
Name: | cmbm_DebtInstrumentMaximumConsolidatedLeverageRatioFirstQuarterOfNextYear
Namespace Prefix: | cmbm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt instrument maximum consolidated leverage ratio fourth quarter. + References No definition available. + Details
Name: | cmbm_DebtInstrumentMaximumConsolidatedLeverageRatioFourthQuarter
Namespace Prefix: | cmbm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt instrument maximum consolidated leverage ratio second quarter of next year. + References No definition available. + Details
Name: | cmbm_DebtInstrumentMaximumConsolidatedLeverageRatioSecondQuarterOfNextYear
Namespace Prefix: | cmbm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt instrument maximum consolidated leverage ratio third quarter of next year. + References No definition available. + Details
Name: | cmbm_DebtInstrumentMaximumConsolidatedLeverageRatioThirdQuarterOfNextYear
Namespace Prefix: | cmbm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt instrument minimum consolidated fixed charge coverage ratio first quarter of next year. + References No definition available. + Details
Name: | cmbm_DebtInstrumentMinimumConsolidatedFixedChargeCoverageRatioFirstQuarterOfNextYear
Namespace Prefix: | cmbm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt instrument minimum consolidated fixed charge coverage ratio fourth quarter. + References No definition available. + Details
Name: | cmbm_DebtInstrumentMinimumConsolidatedFixedChargeCoverageRatioFourthQuarter
Namespace Prefix: | cmbm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt instrument minimum consolidated fixed charge coverage ratio second quarter of next year. + References No definition available. + Details
Name: | cmbm_DebtInstrumentMinimumConsolidatedFixedChargeCoverageRatioSecondQuarterOfNextYear
Namespace Prefix: | cmbm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt instrument minimum consolidated fixed charge coverage ratio third quarter of next year. + References No definition available. + Details
Name: | cmbm_DebtInstrumentMinimumConsolidatedFixedChargeCoverageRatioThirdQuarterOfNextYear
Namespace Prefix: | cmbm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt instrument monthly minimum adjusted quick ratio for non quarter-end. + References No definition available. + Details
Name: | cmbm_DebtInstrumentMonthlyMinimumAdjustedQuickRatioForNonQuarterEnd
Namespace Prefix: | cmbm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt instrument monthly minimum adjusted quick ratio for quarter end. + References No definition available. + Details
Name: | cmbm_DebtInstrumentMonthlyMinimumAdjustedQuickRatioForQuarterEnd
Namespace Prefix: | cmbm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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