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Intangible Assets | 9 Months Ended
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Jun. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets | Intangible Assets The following table provides the gross carrying value, accumulated amortization, net book value and remaining useful life for intangible assets subject to amortization as of June 30, 2022:
|  | Gross Carrying Value |  | Accumulated Amortization |  | Net Book Value |  | Weighted Average Remaining Useful Life (Years)
Accreditations and regulatory approvals - MIAT |  | $ | 12,800 |  |  | $ | — |  |  | $ | 12,800 |  |  | Indefinite
Trademarks and trade names - MIAT |  | 3,000 |  |  | — |  |  | 3,000 |  |  | Indefinite
Curriculum - MIAT |  | 400 |  |  | (53) |  |  | 347 |  |  | 4.33
Non-compete agreement and trade name |  | 442 |  |  | (345) |  |  | 97 |  |  | 2.83
Total |  | $ | 16,642 |  |  | $ | (398) |  |  | $ | 16,244 |  |  | 3.99
Of the $16.6 million gross carrying value recorded as intangible assets as of June 30, 2022, $16.2 million relates to the MIAT acquisition completed on November 1, 2021 as previously described in Note 4. The remaining weighted average useful lives shown are calculated based on the net book value and remaining amortization period of each respective intangible asset. Amortization is computed using the straight-line method based on estimated useful lives of the related assets. Amortization expense related to finite-lived intangible assets was $79.9 thousand and $26.6 thousand for the nine months ended June 30, 2022 and 2021, respectively. As discussed in our new significant accounting policy on intangible assets in Note 2, our indefinite-lived intangible assets are reviewed at least annually for impairment as of August 1, or more frequently if there are indicators of impairment. There were no indicators of impairment for our indefinite-lived intangible assets as of June 30, 2022.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -URI https://asc.fasb.org/subtopic&trid=2144471 + Details
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