For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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Risks and Concentration - Additional Information (Detail)		12 Months Ended
	Jul. 05, 2005	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Revenue Benchmark [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage			10.00%
Number of Customers			0
Revenue Benchmark [Member] \| Royal Canin China Co., Ltd [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage		19.00%	24.00%
Revenue Benchmark [Member] \| Boehringer Ingelheim Animal Health (Shanghai) Co., Ltd [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage		7.00%	14.00%
CNY [Member]
Concentration Risk [Line Items]
Foreign Currency increase (decrease) percentage	20.00%			1.20%	5.70%