Debt Instrument, Cap Interest Rate

No definition available.

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- Definition

Debt Instrument, Floor Interest Rate

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Redemption Price, Annual Increase In Percentage

+ References

No definition available.

+ Details

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- Definition

Line of Credit Facility, Available Increase In Borrowing Capacity

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

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+ Details

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- Definition

Amount, after accumulated amortization, of debt discount.

+ References

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+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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+ Details

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Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

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- Details

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- Details

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- Details

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Borrowings - Narrative (Details) - USD ($)			1 Months Ended		3 Months Ended		6 Months Ended
Borrowings - Narrative (Details) - USD ($)	Jun. 01, 2022	Jun. 01, 2012	Apr. 27, 2023	Jan. 31, 2010	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Oct. 31, 2022	Oct. 13, 2022	Sep. 30, 2022
Line of Credit Facility [Abstract]
Loss on extinguishment of debt, net					$ 0	$ 164,000	$ 515,000	$ 164,000
Senior Notes
Line of Credit Facility [Abstract]
Extinguishment of debt					0		0
Senior Notes \| 5.875%
Line of Credit Facility [Abstract]
Extinguishment of debt						6,000,000		6,000,000
Loss on extinguishment of debt, net						$ 200,000		$ 200,000
Senior Notes \| Subsequent Event
Line of Credit Facility [Abstract]
Extinguishment of debt			$ 5,000,000
Loss on extinguishment of debt, net			$ 100,000
Junior Subordinated Notes
Junior Subordinated Notes [Abstract]
Aggregate principle balance of notes					$ 100,800,000		$ 100,800,000
Weighted average fixed interest rate of debt					7.25%		7.25%
Unamortized accretion					$ 27,470,000		$ 27,470,000				$ 28,503,000
Junior Subordinated Debt, Modified Terms
Junior Subordinated Notes [Abstract]
Aggregate principal amount of debt				$ 75,000,000
Redemption price percentage		75.00%
Annual increase of percentage of principal amount redeemable	1.785%
Junior Subordinated Debt, Modified Terms \| LIBOR
Junior Subordinated Notes [Abstract]
Variable rate floor				4.25%
Variable rate cap				9.25%
Junior Subordinated Debt, Original Terms
Junior Subordinated Notes [Abstract]
Aggregate principal amount of debt					25,800,000		25,800,000
Junior Subordinated Debt, Original Terms \| LIBOR
Junior Subordinated Notes [Abstract]
Basis spread on variable rate				2.45%
Secured Revolving Credit Facility
Line of Credit Facility [Abstract]
Credit facility, maximum borrowing capacity									$ 250,000,000	$ 265,000,000
Credit facility, available increase in borrowing capacity										135,000,000
Secured Revolving Credit Facility					0		0				0
Letters of credit secured using cash collateral					0		0				5,500,000
Amount of available borrowings under the secured revolving credit facility					265,000,000		265,000,000				244,500,000
Loss on extinguishment of debt, net							500,000
Secured Revolving Credit Facility \| Maximum
Line of Credit Facility [Abstract]
Credit facility, maximum borrowing capacity										$ 400,000,000
Letter of Credit
Line of Credit Facility [Abstract]
Letters of credit secured using cash collateral					$ 33,100,000		$ 33,100,000				$ 29,700,000