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Licensing Agreements and Research Contracts - Additional Information (Detail) - USD ($) | 1 Months Ended | 12 Months Ended |
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May 31, 2011 | Mar. 31, 2010 | Mar. 31, 2009 | Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2015 | Mar. 31, 2014
Licensing Agreements [Member] |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Amortization expense of licenses |  |  |  |  | $ 10,300 | $ 9,700 | $ 8,500 |
Weighted average remaining amortization period for all licenses |  |  |  |  | 10 years |  |  |
Annual amortization expense of licenses year 1 |  |  |  |  | $ 10,300 |  |  |
Annual amortization expense of licenses year 2 |  |  |  |  | 10,300 |  |  |
Annual amortization expense of licenses year 3 |  |  |  |  | 10,300 |  |  |
Annual amortization expense of licenses year 4 |  |  |  |  | 10,300 |  |  |
Annual amortization expense of licenses year 5 |  |  |  |  | $ 10,300 |  |  |
University of Missouri [Member] |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Royalty fees percentage minimum |  | 1.00% | 1.00% |  |  |  |  |
Royalty fees percentage maximum |  | 3.00% | 3.00% |  |  |  |  |
Minimum annual royalty payment, start date |  |  |  |  | 2017-01 |  |  |
Expected expiration year of license agreement |  |  | 2029 |  |  |  |  |
Clemson University [Member] |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Minimum annual royalty payment due |  |  |  |  |  | $ 40,000 | $ 20,000 | $ 20,000
Clemson University [Member] | Licensing Agreements [Member] |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Royalty fees percentage minimum | 1.50% |  |  |  |  |  |  |
Royalty fees percentage maximum | 3.00% |  |  |  |  |  |  |
Expected expiration year of license agreement | 2024-05 |  |  |  |  |  |  |
Scenario Forecast [Member] | University of Missouri [Member] |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Annual royalty |  |  |  | $ 25,000 |  |  |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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