XML 83 R63.htm IDEA: XBRL DOCUMENT
v3.20.1

REVENUE RECOGNITION - Schedule of Customer Assets & Liabilities (Details) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 USD ($)
Accounts receivable |
Beginning balance | $ 168,502
Increase (decrease), net | 1,286
Ending balance | 169,788
Unbilled accounts receivable |
Beginning balance | 24,204
Increase (decrease), net | 11,801
Ending balance | 36,005
Deferred revenue (current) |
Beginning balance | 100,406
Increase (decrease), net | 13,293
Ending balance | 113,699
Deferred revenue (long-term) |
Beginning balance | 20,482
Increase (decrease), net | 5,429
Ending balance | $ 25,911

X
- Definition Contract With Customer Change In Asset, Accounts Receivable [Roll Forward] + References No definition available. + Details
Name: | sons_ContractWithCustomerChangeInAssetAccountsReceivableRollForward
Namespace Prefix: | sons_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contract With Customer Change In Asset, Unbilled Receivables, Current [Roll Forward] + References No definition available. + Details
Name: | sons_ContractWithCustomerChangeInAssetUnbilledReceivablesCurrentRollForward
Namespace Prefix: | sons_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contract With Customer Change In Liability, Current [Roll Forward] + References No definition available. + Details
Name: | sons_ContractWithCustomerChangeInLiabilityCurrentRollForward
Namespace Prefix: | sons_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contract With Customer Change In Liability, Noncurrent [Roll Forward] + References No definition available. + Details
Name: | sons_ContractWithCustomerChangeInLiabilityNoncurrentRollForward
Namespace Prefix: | sons_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase (Decrease) in Accounts Receivable, Current + References No definition available. + Details
Name: | sons_IncreaseDecreaseinAccountsReceivableCurrent
Namespace Prefix: | sons_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Increase (Decrease) in Contract With Customer, Liability, Current, Net + References No definition available. + Details
Name: | sons_IncreaseDecreaseinContractWithCustomerLiabilityCurrentNet
Namespace Prefix: | sons_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Increase (Decrease) in Contract With Customer, Liability, Noncurrent, Net + References No definition available. + Details
Name: | sons_IncreaseDecreaseinContractWithCustomerLiabilityNoncurrentNet
Namespace Prefix: | sons_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Increase (Decrease) in Unbilled Receivables, Current + References No definition available. + Details
Name: | sons_IncreaseDecreaseinUnbilledReceivablesCurrent
Namespace Prefix: | sons_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 + Details
Name: | us-gaap_AccountsReceivableGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130532-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045 + Details
Name: | us-gaap_ContractWithCustomerLiabilityCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130532-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045 + Details
Name: | us-gaap_ContractWithCustomerLiabilityNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 912 -SubTopic 310 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118261985&loc=d3e55302-109406 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3(c)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_UnbilledContractsReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant