XML 38 R27.htm IDEA: XBRL DOCUMENT
v3.25.3

Goodwill and Other Intangible Assets (Tables) | 6 Months Ended
--- | ---
Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Carrying Amount of Goodwill | The carrying amount of goodwill by operating segment as of September 30, 2025, is as follows:
| United States and Latin America |  | Canada |  | Europe, Middle East and Africa |  | Asia-Pacific |  | Total
Balance as of March 31, 2025 | $ | 131,030 |  |  | $ | 106,477 |  |  | $ | 20,717 |  |  | $ | 6,107 |  |  | $ | 264,331 |
Goodwill acquired(1) |  |  | — |  |  | 268 |  |  | — |  |  | 268 |
Foreign currency translation impact | — |  |  | 3,337 |  |  | 1,753 |  |  | 116 |  |  | 5,206 |
Balance as of September 30, 2025 | $ | 131,030 |  |  | $ | 109,814 |  |  | $ | 22,738 |  |  | $ | 6,223 |  |  | $ | 269,805 |
Schedule of Intangible Assets | Our total intangible assets consisted of the following:
|  | Gross Carrying Amount at September 30, 2025 |  | Accumulated Amortization |  | Net Carrying Amount at September 30, 2025 |  | Gross Carrying Amount at March 31, 2025 |  | Accumulated Amortization |  | Net Carrying Amount at March 31, 2025
Products |  | $ | 59,853 |  |  | $ | (47,384) |  |  | $ | 12,469 |  |  | $ | 58,034 |  |  | $ | (43,042) |  |  | $ | 14,992 |
Trademarks |  | 55,002 |  |  | (4,469) |  |  | 50,533 |  |  | 53,882 |  |  | (3,838) |  |  | 50,044 |
Developed technology |  | 30,387 |  |  | (10,122) |  |  | 20,265 |  |  | 29,982 |  |  | (9,010) |  |  | 20,972 |
Customer relationships |  | 137,923 |  |  | (111,598) |  |  | 26,325 |  |  | 135,679 |  |  | (107,380) |  |  | 28,299 |
Certifications |  | 432 |  |  | — |  |  | 432 |  |  | 421 |  |  | — |  |  | 421 |
Other |  | 1,280 |  |  | (853) |  |  | 427 |  |  | 1,280 |  |  | (725) |  |  | 555 |
Total |  | $ | 284,877 |  |  | $ | (174,426) |  |  | $ | 110,451 |  |  | $ | 279,278 |  |  | $ | (163,995) |  |  | $ | 115,283 |

X
- Definition Schedule of Intangible Assets [Table Text Block] + References No definition available. + Details
Name: | thr_ScheduleOfIntangibleAssetsTableTextBlock
Namespace Prefix: | thr_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482548/350-20-55-24 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1A Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-2 + Details
Name: | us-gaap_ScheduleOfGoodwillTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration