XML 45 R34.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Revenue Recognition - Additional Information (Detail) | 9 Months Ended
--- | ---
Mar. 31, 2018 Time
Maximum [Member] |
Revenue Recognition Multiple Deliverable Arrangements [Line Items] |
Stock rotation rights of inventory per year for distributors | 2

X
- Definition Stock rotation rights for inventory per year. + References No definition available. + Details
Name: | syna_StockRotationRightsForInventoryPerYear
Namespace Prefix: | syna_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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_RevenueRecognitionMultipleDeliverableArrangementsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |