Name:	tnav_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingAggregateIntrinsicValue
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Data Type:	xbrli:monetaryItemType
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Share based Compensation Arrangement by Share based Payment Award, Equity Instruments Other Than Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value

No definition available.

Name:	tnav_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue
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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Expected to Vest, Number

No definition available.

Name:	tnav_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedtoVestNumber
Namespace Prefix:	tnav_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Vested

No definition available.

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Data Type:	xbrli:sharesItemType
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Share-based Compensation Arrangements by Share-based Payment Award, Equity Instruments Other Than Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term

No definition available.

Name:	tnav_SharebasedCompensationArrangementsBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm
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Data Type:	xbrli:durationItemType
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Period Type:	duration

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms
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Data Type:	xbrli:durationItemType
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Number of shares under non-option equity instrument agreements that were either cancelled or expired.

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Data Type:	xbrli:sharesItemType
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Period Type:	duration

Net number of non-option equity instruments granted to participants.

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Data Type:	xbrli:sharesItemType
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Period Type:	duration

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
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Period Type:	instant

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.