The asset coverage to borrowings ratio percentage.

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The variable rate of debt instrument.

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The advance rate under line of credit facility.

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The advance rate of eligible debt investments under line of credit facility.

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The change in maximum borrowing capacity in line of credit facility.

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Maximum borrowing capacity under the credit facility after the accordion feature increase.

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The accordion feature for the maximum borrowing capacity under line of credit facility.

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

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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.

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The price per share of the conversion feature embedded in the debt instrument.

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

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Contractual interest rate for funds borrowed, under the debt agreement.

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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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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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The effective interest rate at the end of the reporting period.

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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.

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

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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No definition available.

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Weighted average interest rate of long-term debt outstanding calculated over time.

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Investments which are not defined as or included in marketable (debt, equity, or other) securities whose use is restricted in whole or in part, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet.

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Note 7 - Borrowings (Details Textual) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended		12 Months Ended
	May 24, 2023	Feb. 25, 2022	Apr. 21, 2020	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Jun. 29, 2023	Nov. 09, 2022	Jun. 15, 2022	Mar. 30, 2021	Aug. 13, 2019
Restricted Investments				$ 2,533		$ 2,642
Long-Term Debt, Gross				456,000		466,000
Debt Instrument, Face Amount				$ 615,000		615,000
Key Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity, Accordian Feature							$ 150,000
Line of Credit Facility, Maximum Borrowing Capacity							$ 300,000
Line of Credit Facility, Advance Rate of Eligible Debt Investments							60.00%
Long-Term Debt, Weighted Average Interest Rate, over Time				8.75%	7.94%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage				0.50%
Line of Credit Facility, Current Borrowing Capacity				$ 90,000		80,000
Line of Credit Facility, Remaining Borrowing Capacity				20,300		25,000
Long-Term Debt, Gross				60,000		70,000
Debt Instrument, Face Amount				$ 150,000		$ 150,000
Key Facility [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate						0.25%
Debt Instrument, Variable Rate				8.50%		8.50%
NYL Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 250,000		$ 100,000
Line of Credit Facility, Current Borrowing Capacity				$ 69,000		$ 69,000
Line of Credit Facility, Remaining Borrowing Capacity				900		17,400
Line of Credit Facility, Maximum Borrowing Capacity, Accordion Feature			$ 200,000
Line of Credit Facility, Advance Rate			67.00%
Line of Credit Facility, Change in Maximum Borrowing Capacity	$ 50,000	$ 100,000
Debt Instrument, Interest Rate, Stated Percentage	4.60%
Long-Term Line of Credit				$ 181,000		181,000
Line of Credit Facility, Interest Rate at Period End				6.18%	5.57%
Restricted Investments				$ 1,400		1,400
Long-Term Debt, Gross				181,000		181,000
Debt Instrument, Face Amount				250,000		250,000
NYL Facility [Member] \| USD Mid-market Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		3.00%
NYL Facility [Member] \| Three Year I Curve [Member]
Debt Instrument, Basis Spread on Variable Rate	3.50%
Asset-backed Notes 2019 [Member]
Debt Instrument, Interest Rate, Stated Percentage											4.21%
Debt Instrument, Face Amount											$ 160,000
Asset-backed Notes 2022 [Member]
Debt Instrument, Interest Rate, Stated Percentage								7.56%
Restricted Investments				1,300		1,200
Long-Term Debt, Gross				100,000		100,000
Debt Instrument, Face Amount				100,000		100,000		$ 157,800
The 2026 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage										4.875%
Long-Term Debt, Gross				57,500		57,500
Debt Instrument, Face Amount				57,500		57,500				$ 57,500
The 2026 Notes Underwriter Option [Member]
Debt Instrument, Face Amount										$ 7,500
Debt Instrument, Convertible, Conversion Price (in dollars per share)										$ 25
The 2027 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage									6.25%
Long-Term Debt, Gross				57,500		57,500
Debt Instrument, Face Amount				$ 57,500		$ 57,500			$ 50,000
The 2027 Notes Underwriter Option [Member]
Debt Instrument, Face Amount									$ 7,500
Debt Instrument, Convertible, Conversion Price (in dollars per share)									$ 25
Minimum [Member]
Asset Coverage to Borrowings, Ratio, Percent				150.00%
Minimum [Member] \| Key Facility [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate						4.25%
Minimum [Member] \| NYL Facility [Member] \| USD Mid-market Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate			3.55%
Maximum [Member]
Asset Coverage to Borrowings, Ratio, Percent				173.00%
Maximum [Member] \| NYL Facility [Member] \| USD Mid-market Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate			5.15%