Carrying value of Other Investments (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Beginning balance	$ 38,741	$ 26,584	$ 38,741	$ 24,584
Additions	1,100	5,000	3,100	7,000
Reclassification			(2,000)
Impairment	(800)		(800)
Ending balance	$ 39,041	$ 31,584	$ 39,041	$ 31,584

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Amount of investments classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
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Amount of cash outflow to acquire investments classified as other.

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-SubTopic 10
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The cash inflow associated with the maturity (principal being due), prepayment and call (request of early payment) of other investments not otherwise defined in the taxonomy.

+ References

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-Publisher FASB
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The cash inflow associated with the sale and maturity (principal being due) of other investments, prepayment and call (request of early payment) of other investments not otherwise defined in the taxonomy.

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