Collaborative Research, Development, and License Agreements - Additional Information (Detail)	1 Months Ended												12 Months Ended
	Jan. 03, 2020 USD ($)	Nov. 30, 2019 USD ($)	Jan. 31, 2019 USD ($)	May 31, 2018 USD ($)	Jun. 30, 2017 USD ($)	Apr. 30, 2017 USD ($)	Dec. 31, 2016	Sep. 30, 2015 USD ($)	Aug. 31, 2015	May 31, 2011	Mar. 31, 2010	Mar. 31, 2009	Mar. 31, 2020 USD ($) Milestone	Mar. 31, 2019 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Total Revenues													$ 2,196,000	$ 3,091,000
Non-exclusive patent license agreement annual fee													328,000	482,000
Licensing Agreements [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Amortization expense of licenses													$ 14,000	14,000
Weighted average remaining amortization period for all licenses													10 years
Annual amortization expense of licenses year 1													$ 14,000
Annual amortization expense of licenses year 2													14,000
Annual amortization expense of licenses year 3													14,000
Annual amortization expense of licenses year 4													14,000
Annual amortization expense of licenses year 5													14,000
April 2017 Non-exclusive Research Affiliation Collaborative [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Non-exclusive patent license agreement term						2 years
Proceeds from Non-exclusive patent annual license fee				$ 75,000		$ 75,000
University of Missouri [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Royalty fees percentage minimum											1.00%	1.00%
Royalty fees percentage maximum											3.00%	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
Clemson University [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Minimum annual royalty payment due															$ 40,000	$ 20,000	$ 20,000
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
UniQuest [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Minimum annual royalty paid								$ 15,000
milestone payments													$ 20,000
Number of milestone payments | Milestone													2
Initial fee					$ 35,000			$ 35,000
Minimum annual royalty payments due													$ 25,000
UniQuest [Member] | Licensing Agreements [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Expected expiration year of license agreement							2026-12		2025-08
milestone payments													0
Collaborations and Licenses [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Total Revenues													89,000	171,000
Collaborations and Licenses [Member] | December 2016 Non-exclusive Research Affiliation Collaborative [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Total Revenues													19,000	39,000
Collaborations and Licenses [Member] | April 2017 Non-exclusive Research Affiliation Collaborative [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Total Revenues													0	75,000
Collaborations and Licenses [Member] | April 2017 Non-exclusive Research Affiliation Collaborative [Member] | Up-front Payment Received [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Total Revenues													$ 0	$ 57,000
Collaborations and Licenses [Member] | November 2019 Agreement [Member] | Viscient Biosciences [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Total Revenues		$ 70,000
License [Member] | April 2017 Non-exclusive Research Affiliation Collaborative [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Non-exclusive patent license agreement annual fee						$ 75,000