Line of Credit - Additional Information (Details)			3 Months Ended		6 Months Ended
	May 17, 2022 USD ($)	Mar. 12, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Mar. 31, 2022 USD ($)	Mar. 29, 2018 USD ($)
Line Of Credit Facility [Line Items]
Leverage ratio	4.00	3.75
Adjusted covenant period option	4.75	4.25
Restricted payments cap	$ 25,000,000	$ 11,500,000
Loans outstanding			$ 0		$ 0		$ 0
Remaining borrowing capacity			300,000,000		300,000,000		$ 300,000,000
Interest expense			198,000	$ 193,000	401,000	$ 383,000
Amortization of debt issuance costs			$ 127,000	$ 127,000	$ 254,000	$ 254,000
Revolving Credit Facility
Line Of Credit Facility [Line Items]
Maximum borrowing capacity		300,000,000						$ 300,000,000
Additional revolving credit commitments		150,000,000
Credit agreement maturity date					Mar. 12, 2026
Letter of Credit
Line Of Credit Facility [Line Items]
Maximum borrowing capacity		10,000,000
Swing-Line Loans
Line Of Credit Facility [Line Items]
Maximum borrowing capacity		$ 10,000,000