Debt Instrument, Amended Credit Agreement, Principal Amount Permitted to be Repaid

No definition available.

Name:	hear_DebtInstrumentAmendedCreditAgreementPrincipalAmountPermittedtobeRepaid
Namespace Prefix:	hear_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument, Covenant, Current Fixed Charge Ratio, Minimum

+ References

No definition available.

+ Details

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Namespace Prefix:	hear_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- 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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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

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

- 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

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
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- Details

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- Details

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- Details

Name:	us-gaap_CounterpartyNameAxis=hear_UKBorrowerMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LoansPayableMember
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Credit Facilities and Long-Term Debt - Credit Facility (Details)	6 Months Ended
	Jun. 30, 2016 USD ($)	Mar. 16, 2015	Dec. 29, 2014 USD ($)
Line of Credit Facility [Line Items]
Expiration date	Mar. 31, 2019
Revolving credit facility, maturing March 2019
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 60,000,000
Remaining borrowing capacity	$ 4,900,000
Debt Instrument, Covenant, Current Fixed Charge Ratio Required, Minimum		1.15
Revolving credit facility, maturing March 2019 \| Minimum
Line of Credit Facility [Line Items]
Unused commitment fee, percent	0.25%
Revolving credit facility, maturing March 2019 \| Maximum
Line of Credit Facility [Line Items]
Unused commitment fee, percent	0.50%
Revolving credit facility, maturing March 2019 \| Base rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	5.00%
Revolving credit facility, maturing March 2019 \| Base rate \| Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%
Revolving credit facility, maturing March 2019 \| Base rate \| Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
Revolving credit facility, maturing March 2019 \| London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.92%
Revolving credit facility, maturing March 2019 \| London Interbank Offered Rate (LIBOR) [Member] \| Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.00%
Revolving credit facility, maturing March 2019 \| London Interbank Offered Rate (LIBOR) [Member] \| Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.50%
Revolving credit facility, maturing March 2019 \| UK Borrower
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 10,000,000
Loans Payable
Line of Credit Facility [Line Items]
Debt Instrument, Amended Credit Agreement, Principal Amount Permitted to be Repaid			$ 7,700,000
Loans Payable \| London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	5.00%