XML 112 R70.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2

PROPERTY AND EQUIPMENT - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Depreciation and amortization of property and equipment	$ 11,949	$ 11,200	$ 8,486

X

- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets to periods that benefit from use of the assets.

+ References

No definition available.

+ Details

Name:	sons_DepreciationAndAmortizationOfTangibleAssets
Namespace Prefix:	sons_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration