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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Debt - Summary of Debt Outstanding (Details) € in Millions, $ in Millions	Jun. 30, 2022 USD ($)	Jun. 30, 2022 EUR (€)	Dec. 31, 2021 USD ($)
Debt Instrument
Total debt	$ 618.1		$ 420.9
Ark Subordinated Debt
Debt Instrument
Unamortized issuance cost	(5.0)		(5.3)
Ark 2007 Subordinated Notes, carrying value \| Ark Subordinated Debt
Debt Instrument
Amount borrowed	30.0		30.0
Ark 2021 Notes Tranche 1
Debt Instrument
Amount borrowed \| €		€ 39.1
Ark 2021 Notes Tranche 1 \| Ark Subordinated Debt
Debt Instrument
Amount borrowed	41.5		44.2
Ark 2021 Notes Tranche 2 \| Ark Subordinated Debt
Debt Instrument
Amount borrowed	47.0		47.0
Ark 2021 Notes Tranche 3 \| Ark Subordinated Debt
Debt Instrument
Amount borrowed	70.0		70.0
Ark 2021 Notes \| Ark Subordinated Debt
Debt Instrument
Total debt	$ 153.5		$ 155.9
Ark
Debt Instrument
Effective percentage	6.80%	6.80%	6.90%
Ark \| Ark Subordinated Debt
Debt Instrument
Total debt	$ 183.5		$ 185.9
Kudu Credit Facility
Debt Instrument
Total debt	253.3		218.2
Other
Debt Instrument
Total debt	$ 35.0
HG Global
Debt Instrument
Effective percentage	7.60%	7.60%
Secured Debt \| HG Global Senior Notes
Debt Instrument
Amount borrowed	$ 150.0
Unamortized issuance cost	(3.7)
Total debt	146.3
Term Loan \| Kudu Credit Facility
Debt Instrument
Amount borrowed	260.4		225.4
Unamortized issuance cost	$ (7.1)		$ (7.2)
Effective percentage	5.10%	5.10%	4.30%
Term Loan \| Other Operations (1)
Debt Instrument
Amount borrowed	$ 35.7		$ 17.1
Unamortized issuance cost	$ (0.7)		$ (0.3)
Effective percentage	7.40%	7.40%	7.50%
Term Loan \| Other
Debt Instrument
Total debt			$ 16.8