Name:	thr_GuaranteeObligationsRepresentedByReductionOfAvailableAmountOfLinesOfCredit
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Data Type:	xbrli:monetaryItemType
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Represents the amount of guarantee obligations secured by cash deposits.

No definition available.

Name:	thr_GuaranteeObligationsSecuredByCashDeposits
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Data Type:	xbrli:monetaryItemType
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Indian Custom Bonds Outstanding

No definition available.

Name:	thr_IndianCustomBondsOutstanding
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Percentage Of Receivables From Customer

No definition available.

Name:	thr_PercentageOfReceivablesFromCustomer
Namespace Prefix:	thr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

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Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from change in measure of progress which (increases) decreases obligation to transfer good or service to customer for which consideration from customer has been received or is due.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130551-203045

Name:	us-gaap_ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress
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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12069-110248

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Amount due from customers for fees and charges arising from transactions related to the entity's brokerage activities and operations.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522