XML 113 R70.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Subsequent Events Review - Narrative (Details) - USD ($) $ in Millions |  | 1 Months Ended |
--- | --- | --- | ---
Jun. 13, 2018 | May 31, 2018 | Aug. 12, 2014
2019 Notes |  |  |
Subsequent Event [Line Items] |  |  |
Interest rate (as a percent) |  |  | 0.75%
Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Percentage of outstanding principal, notice to accelerate payment | 25.00% |  |
Honeybee Software | Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Total preliminary cash consideration transferred |  | $ 10.7 |

X
- Definition Debt Instrument, Percentage Of Outstanding Principal, Notice To Accelerate Payment + References No definition available. + Details
Name: | sncr_DebtInstrumentPercentageOfOutstandingPrincipalNoticeToAcceleratePayment
Namespace Prefix: | sncr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=sncr_ConvertibleSeniorNotesDue2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=sncr_HoneybeeSoftwareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |