XML 69 R58.htm IDEA: XBRL DOCUMENT
v3.20.2

DEBT - Credit Facilities (Details) |  |  |  | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Aug. 18, 2020 USD ($) | Mar. 03, 2020 USD ($) | Apr. 29, 2019 USD ($) | Sep. 30, 2020 USD ($) | Dec. 31, 2019 USD ($) | Nov. 14, 2019 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Letters of credit outstanding |  |  |  | $ 30,300,000 |  |
2019 Credit Agreement |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Outstanding balance |  |  |  |  | $ 48,800,000 |
2020 Credit Agreement |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Commitments from lender |  | $ 500,000,000 |  |  |  |
Default rate percentage |  | 2.00% |  |  |  |
Repayments of principal in first year |  |  |  | 10,000,000 |  |
Repayments of principal in year two |  |  |  | 20,000,000 |  |
Repayments of principal in year three |  |  |  | 20,000,000 |  |
Repayments of principal in year four |  |  |  | 20,000,000 |  |
Repayments of principal in last year |  |  |  | $ 30,000,000 |  |
Percentage of consolidated adjusted EBITDA | 75.00% | 100.00% |  |  |  |
2020 Credit Agreement | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Consolidated net leverage ratio | 2.25 |  |  |  |  |
Borrower's consolidated net leverage ratio | $ 25,000,000 |  |  |  |  |
2020 Credit Agreement | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Consolidated net leverage ratio | 2.75 |  |  |  |  |
Borrower's consolidated net leverage ratio | $ 10,000,000 |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Commitments from lender |  |  |  |  |  | $ 100,000,000
Revolving Credit Facility | 2019 Credit Agreement |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal amount |  |  | $ 50,000,000 |  |  |
Increase commitment under debt instrument |  |  | 75,000,000 |  |  |
Revolving Credit Facility | 2019 Credit Agreement | Line of Credit |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Commitments from lender |  |  | $ 100,000,000 |  |  |
Outstanding balance |  |  |  |  | $ 8,000,000 |
Debt interest rate |  |  |  |  | 3.30% |
Default rate percentage |  |  |  | 2.00% |  |
Revolving Credit Facility | 2019 Credit Agreement | Line of Credit | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 0.00% |  |
Revolving Credit Facility | 2019 Credit Agreement | Line of Credit | LIBOR | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 1.50% |  |
Revolving Credit Facility | 2019 Credit Agreement | Line of Credit | LIBOR | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 3.00% |  |
Revolving Credit Facility | 2019 Credit Agreement | Line of Credit | Base Rate |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 0.50% |  |
Revolving Credit Facility | 2019 Credit Agreement | Line of Credit | Additional Applicable Margin | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 0.50% |  |
Revolving Credit Facility | 2019 Credit Agreement | Line of Credit | Additional Applicable Margin | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 2.00% |  |
Revolving Credit Facility | 2020 Credit Agreement |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Commitments from lender |  | $ 100,000,000 |  |  |  |
Revolving Credit Facility | 2020 Credit Agreement | Line of Credit | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 0.00% |  |  |  |  |
Letter of Credit | 2019 Credit Agreement | Line of Credit |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Outstanding balance |  |  |  |  | $ 5,400,000 |
Debt interest rate |  |  |  |  | 1.50% |
Letter of Credit | 2020 Credit Agreement |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Commitments from lender |  | 30,000,000 |  |  |  |
Debt interest rate |  |  |  | 2.50% |  |
Letters of credit outstanding |  |  |  | $ 5,300,000 |  |
Swingline Loan | 2020 Credit Agreement |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Commitments from lender |  | 20,000,000 |  |  |  |
Term Loan Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Commitments from lender |  |  |  |  |  | $ 400,000,000
Term Loan Facility | 2020 Credit Agreement |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal amount |  |  |  | 400,000,000 |  |
Commitments from lender |  | $ 400,000,000 |  |  |  |
Outstanding balance |  |  |  | 395,300,000 |  |
Term Loan Facility, Term A Loan | 2020 Credit Agreement |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Commitments from lender | $ 325,000,000 |  |  |  |  |
Outstanding balance |  |  |  | $ 320,500,000 |  |
Debt interest rate |  |  |  | 3.40% |  |
Repayments of principal in first year | 10,000,000 |  |  |  |  |
Repayments of principal in year two | 16,000,000 |  |  |  |  |
Repayments of principal in year three | 16,000,000 |  |  |  |  |
Repayments of principal in year four | 20,000,000 |  |  |  |  |
Repayments of principal in last year | 16,000,000 |  |  |  |  |
Repayments of principal on the maturity date | $ 244,000,000 |  |  |  |  |
Term Loan Facility, Term A Loan | 2020 Credit Agreement | LIBOR | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 1.50% |  |  |  |  |
Term Loan Facility, Term A Loan | 2020 Credit Agreement | LIBOR | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 3.50% |  |  |  |  |
Term Loan Facility, Term A Loan | 2020 Credit Agreement | Base Rate |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 0.50% |  |  |  |  |
Term Loan Facility, Term A Loan | 2020 Credit Agreement | Additional Applicable Margin | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 0.50% |  |  |  |  |
Term Loan Facility, Term A Loan | 2020 Credit Agreement | Additional Applicable Margin | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 2.50% |  |  |  |  |
Term Loan Facility, Term B Loan | Additional Applicable Margin |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 6.50% |  |  |  |  |
Term Loan Facility, Term B Loan | 2020 Credit Agreement |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Commitments from lender | $ 75,000,000 |  |  |  |  |
Outstanding balance |  |  |  | $ 74,800,000 |  |
Debt interest rate |  |  |  | 8.40% |  |
Repayments of principal in first year | 1,000,000 |  |  |  |  |
Repayments of principal in year two | 8,000,000 |  |  |  |  |
Repayments of principal in year three | 8,000,000 |  |  |  |  |
Repayments of principal in year four | 8,000,000 |  |  |  |  |
Repayments of principal in last year | 8,000,000 |  |  |  |  |
Repayments of principal on the maturity date | $ 66,000,000 |  |  |  |  |
Premium percentage from voluntary repayment | 1.00% |  |  |  |  |
Term Loan Facility, Term B Loan | 2020 Credit Agreement | LIBOR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 7.50% |  |  |  |  |
Term Loan Facility, Term B Loan | 2020 Credit Agreement | Prime Rate | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 0.50% |  |  |  |  |

X
- Definition Debt Instrument, Premium From Voluntary Repayment, Percentage + References No definition available. + Details
Name: | rbbn_DebtInstrumentPremiumFromVoluntaryRepaymentPercentage
Namespace Prefix: | rbbn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line Of Credit Facility, Default Rate, Percentage + References No definition available. + Details
Name: | rbbn_LineOfCreditFacilityDefaultRatePercentage
Namespace Prefix: | rbbn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line of credit facility net leverage ratio + References No definition available. + Details
Name: | rbbn_LineOfCreditFacilityNetLeverageRatio
Namespace Prefix: | rbbn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line Of Credit Facility, Percentage Of Consolidated EBITDA + References No definition available. + Details
Name: | rbbn_LineOfCreditFacilityPercentageOfConsolidatedEBITDA
Namespace Prefix: | rbbn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average interest rate of debt outstanding. + References No definition available. + Details
Name: | us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase (decrease) of the credit facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
Name: | us-gaap_LineOfCreditFacilityIncreaseDecreaseForPeriodNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextRollingTwelveMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingAfterYearFive
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearFive
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearFour
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearThree
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearTwo
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Indebtedness divided by net capital. + References No definition available. + Details
Name: | us-gaap_RatioOfIndebtednessToNetCapital1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentAxis=rbbn_A2019CreditAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=rbbn_A2020CreditAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=rbbn_AdditionalApplicableMarginMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_BridgeLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=rbbn_TermLoanFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=rbbn_TermLoanFacilityTermALoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=rbbn_TermLoanFacilityTermBLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_PrimeRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |