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Collaborative Research, Development, and License Agreements - Additional Information (Detail) - USD ($) |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | 137 Months Ended | 163 Months Ended |  |  |
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Feb. 22, 2022 | Mar. 31, 2022 | Jan. 31, 2022 | Mar. 31, 2021 | Jan. 31, 2021 | May 31, 2011 | Mar. 31, 2009 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Mar. 31, 2022 | Mar. 31, 2021 | Sep. 30, 2022 | Sep. 30, 2022 | Mar. 31, 2016 | Mar. 31, 2015 | Mar. 31, 2014
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Revenues |  |  |  |  |  |  |  | $ 77,000 | $ 0 | $ 77,000 | $ 0 |  |  |  |  |  |  |
BICO Group AB [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nonrefundable upfront fee paid | $ 1,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Revenues | $ 1,500,000 |  |  |  |  |  |  | $ 77,000 |  | 77,000 |  |  |  |  |  |  |  |
University of Missouri [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Royalty fees percentage minimum |  |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |
Royalty fees percentage maximum |  |  |  |  |  |  | 3.00% |  |  |  |  |  |  |  |  |  |  |
Minimum annual royalty paid |  |  | $ 25,000 |  | $ 25,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Excess of minimum annual royalties payment |  | $ 0 |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected expiration year of license agreement |  |  |  |  |  |  | 2029 |  |  |  |  |  |  |  |  |  |  |
Upfront payment |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  | $ 0 |  |  |
University of Missouri [Member] | Sublicense Agreements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of royalty revenue from sublicensee |  |  |  |  |  |  |  |  |  | 3.00% |  |  |  |  |  |  |  |
Clemson University [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum annual royalty paid |  |  |  |  |  |  |  |  |  |  |  | $ 40,000 | $ 40,000 |  |  |  |  |
Upfront payment |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  | $ 0 |  |  |  |
Minimum annual royalty payment due |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 40,000 | $ 20,000 | $ 20,000
Clemson University [Member] | Sublicense Agreements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of royalty revenue from sublicensee |  |  |  |  |  |  |  |  |  | 40.00% |  |  |  |  |  |  |  |
Clemson University [Member] | Licensing Agreements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Royalty fees percentage minimum |  |  |  |  |  | 1.50% |  |  |  |  |  |  |  |  |  |  |  |
Royalty fees percentage maximum |  |  |  |  |  | 3.00% |  |  |  |  |  |  |  |  |  |  |  |
Expected expiration year of license agreement |  |  |  |  |  | 2024-05 |  |  |  |  |  |  |  |  |  |  |  |

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