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Debt - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 9 Months Ended
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Mar. 31, 2015
Debt Instrument [Line Items] |
Amount borrowed under revolving credit facility | $ 248.1 us-gaap_LineOfCredit
Debt issuance cost | 5.0 us-gaap_DebtIssuanceCosts
Debt amortization period | 60 months
Percentage of voting capital stock | 65.00%syna_PercentageOfVotingCapitalStockOfCertainForeignSubsidiariesCollateralized
Description of Base Rate | The revolving credit facility and term loans bear interest at our election of a Base Rate plus an applicable margin or LIBOR plus an applicable margin. Swingline loans bear interest at a Base Rate plus an applicable margin. The Base Rate is a floating rate that is the greater of the Prime Rate, the Federal Funds Rate plus 50 basis points, or LIBOR plus 100 basis points. The applicable margin is based on a sliding scale which ranges from zero to 100 basis points for Base Rate loans and 100 basis points to 200 basis points for LIBOR loans.
Description of periodic payments | The term loan facility requires repayment over five years with nineteen quarterly principal payments which began in the three months ending March 31, 2015.
Quarterly payment beginning period | Mar. 31, 2015
Final principal payment | 90.0 syna_LineOfCreditFacilityFinalPrincipalPayment
Revolving credit facility maturity period | Sep. 30, 2019
Operating covenant description | Under the Credit Agreement, there are restrictive operating covenants, including three financial covenants which limit the consolidated total leverage ratio, or leverage ratio, the consolidated interest coverage ratio, or interest coverage ratio, and places a restriction on the amount of capital expenditures that may be made in any fiscal year. The leverage ratio is the ratio of debt as of the measurement date to earnings before interest, taxes, depreciation and amortization, or EBITDA, for the four consecutive quarters ending with the quarter of measurement. The leverage ratio must not exceed 2.50 to 1.0 during the first two years of the agreement, and 2.0 to 1.0 during the last three years of the agreement. The interest coverage ratio is EBITDA to interest expense for the four consecutive quarters ending with the quarter of measurement. The interest coverage ratio must not be less than 3.50 to 1.0 during the term of the Credit Agreement.
First Four Quarters [Member] |
Debt Instrument [Line Items] |
Quarterly principal payment | 1.9 us-gaap_LineOfCreditFacilityPeriodicPaymentPrincipal / us-gaap_DebtInstrumentRedemptionPeriodAxis = syna_FirstFourQuartersMember
Next Fourteen Quarters [Member] |
Debt Instrument [Line Items] |
Quarterly principal payment | 3.8 us-gaap_LineOfCreditFacilityPeriodicPaymentPrincipal / us-gaap_DebtInstrumentRedemptionPeriodAxis = syna_NextFourteenQuartersMember
Federal Funds Effective Swap Rate [Member] |
Debt Instrument [Line Items] |
Basis spread on variable rate | 0.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_VariableRateAxis = us-gaap_FederalFundsEffectiveSwapRateMember
London Interbank Offered Rate (LIBOR) [Member] |
Debt Instrument [Line Items] |
Basis spread on variable rate | 1.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] |
Debt Instrument [Line Items] |
Basis spread on variable rate | 1.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] |
Debt Instrument [Line Items] |
Basis spread on variable rate | 2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember
Base Rate [Member] | Minimum [Member] |
Debt Instrument [Line Items] |
Basis spread on variable rate | 0.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_VariableRateAxis = us-gaap_BaseRateMember
Base Rate [Member] | Maximum [Member] |
Debt Instrument [Line Items] |
Basis spread on variable rate | 1.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_VariableRateAxis = us-gaap_BaseRateMember
Revolving Credit Facility [Member] |
Debt Instrument [Line Items] |
Line of credit facility amount | 150 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember
Amount borrowed under revolving credit facility | 100.0 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember
Revolving Credit Facility [Member] | Minimum [Member] |
Debt Instrument [Line Items] |
Commitment fee percentage of unused portion | 0.25%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Revolving Credit Facility [Member] | Maximum [Member] |
Debt Instrument [Line Items] |
Commitment fee percentage of unused portion | 0.45%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Revolving Credit Facility and Term Loan [Member] |
Debt Instrument [Line Items] |
Increase in Line of credit facility | 100 syna_LineOfCreditFacilityAllowableRequestsForAdditionalBorrowing / us-gaap_CreditFacilityAxis = syna_RevolvingCreditFacilityAndTermLoanMember
Term Loan [Member] |
Debt Instrument [Line Items] |
Line of credit facility amount | 150 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = syna_TermLoanMember
Amount borrowed under revolving credit facility | 150.0 us-gaap_LineOfCredit / us-gaap_DebtInstrumentAxis = syna_TermLoanMember
Letter of Credit [Member] |
Debt Instrument [Line Items] |
Line of credit facility amount | 20 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_ShortTermDebtTypeAxis = us-gaap_LetterOfCreditMember
Bridge Loan [Member] |
Debt Instrument [Line Items] |
Line of credit facility amount | $ 20 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_ShortTermDebtTypeAxis = us-gaap_BridgeLoanMember

X
- Definition Debt instrument amortization period. + References No definition available. + Details
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- Definition Line of credit facility allowable requests for additional borrowing. + References No definition available. + Details
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Namespace Prefix: | syna_
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Balance Type: | credit
Period Type: | instant

X
- Definition Amount of the final principal payment made at the maturity of the credit facility. + References No definition available. + Details
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X
- Definition Percentage of voting capital stock of certain foreign subsidiaries collateralized. + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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X
- Definition Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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- Definition The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
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- Details
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- Definition Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees). + References No definition available. + Details
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X
- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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Balance Type: | credit
Period Type: | instant

X
- Definition Date the first payment under the line of credit must be paid, in CCYY-MM-DD format. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration

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- Definition Date the credit facility terminates, in CCYY-MM-DD format. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Description of the frequency of periodic payments, which may be presented in a variety of ways (for example, monthly, quarterly, annually). + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Amount of the required periodic payment applied to principal. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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