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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
	Dec. 05, 2022	May 31, 2011	Mar. 31, 2009	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Total Revenues				$ 0	$ 77,000	$ 75,000	$ 77,000
BICO Group AB [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Total Revenues						$ 75,000
University of Missouri [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Royalty fees percentage minimum			1.00%
Royalty fees percentage maximum			3.00%
Upfront payment	$ 50,000,000
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
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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