State Net Operating Loss (Detail) - States $ in Millions	12 Months Ended
	Mar. 31, 2022 USD ($)
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards, amount	$ 17.6
Fiscal Year 2016
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward, origination year	2016
Net operating loss carry forwards, amount	$ 1.4
Net operating loss carryforwards, expiration year	2034
Fiscal Year 2017
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward, origination year	2017
Net operating loss carry forwards, amount	$ 0.8
Net operating loss carryforwards, expiration year	2036
Fiscal Year 2018
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward, origination year	2018
Net operating loss carry forwards, amount	$ 2.6
Net operating loss carryforwards, expiration year	2037
Fiscal Year 2019
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward, origination year	2019
Net operating loss carry forwards, amount	$ 2.7
Net operating loss carryforwards, expiration year	2038
Fiscal Year 2020
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward, origination year	2020
Net operating loss carry forwards, amount	$ 3.0
Net operating loss carryforwards, expiration year	2039
Fiscal Year 2021
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward, origination year	2021
Net operating loss carry forwards, amount	$ 3.7
Net operating loss carryforwards, expiration year	2040
Fiscal Year 2022
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward, origination year	2022
Net operating loss carry forwards, amount	$ 3.4
Net operating loss carryforwards, expiration year	2041