Debt (Narrative) (Details)			12 Months Ended
	Nov. 23, 2022	Sep. 27, 2021 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)
Line of Credit Facility [Line Items]
Accordion feature permitting the maximum aggregate commitments to increase			$ 785,000,000
Amount outstanding			595,300,000
Standby letters of credit			$ 300,000
Commitment fee percentage			0.50%
Gain on extinguishment of senior unsecured notes payable			$ 1,831,277	$ 0	$ 0
Senior notes payable
Line of Credit Facility [Line Items]
Debt issuance costs			1,200,000	700,000
Senior notes payable | Senior Notes Due 2026
Line of Credit Facility [Line Items]
Interest rate		7.00%
Aggregate principal amount		$ 300,000,000
Redemption price, percentage of equity offerings		40.00%
Repurchased and extinguished amount of debt			9,000,000
Debt issuance costs			100,000
Reacquisition price			7,200,000
Gain on extinguishment of senior unsecured notes payable			1,800,000
Senior notes payable | Senior Notes Due 2026 | Period One
Line of Credit Facility [Line Items]
Redemption price percent		100.00%
Senior notes payable | Senior Notes Due 2026 | Period Two
Line of Credit Facility [Line Items]
Redemption price percent		107.00%
Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity			685,000,000
Amount outstanding			$ 307,900,000
Extension period			1 year
Interest rate			3.50%
Unused borrowing capacity fee			$ 1,290,000	$ 1,340,000	$ 1,300,000
Expiration date			Jun. 07, 2024
Effective interest rate			7.00%	5.00%	5.80%
Unused amount available			$ 318,700,000
Debt covenants minimum net worth			$ 325,000,000
Fixed charge ratio			2.0
Expiration period			60 days
Revolving Credit Facility | Scenario 1
Line of Credit Facility [Line Items]
Debt covenant, maximum ratio of total debt	2.5
Debt covenant, maximum collateral performance indicator percentage	26.00%
Fixed charge ratio	1.25
Revolving Credit Facility | Scenario 2
Line of Credit Facility [Line Items]
Debt covenant, maximum ratio of total debt	2.25
Debt covenant, maximum collateral performance indicator percentage	28.00%
Fixed charge ratio	1.15
Revolving Credit Facility | Scenario 3
Line of Credit Facility [Line Items]
Debt covenant, maximum ratio of total debt	2.0
Fixed charge ratio	1.50
Revolving Credit Facility | Scenario 4
Line of Credit Facility [Line Items]
Debt covenant, maximum ratio of total debt	2.25
Fixed charge ratio	2.0
Revolving Credit Facility | Scenario 5
Line of Credit Facility [Line Items]
Fixed charge ratio	2.75
Revolving Credit Facility | SOFR
Line of Credit Facility [Line Items]
Variable rate			0.10%
Revolving Credit Facility | Minimum
Line of Credit Facility [Line Items]
Interest rate			4.50%