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Minimum voting power to nominate directors.

+ References

No definition available.

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- Definition

Prepaid management fee.

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No definition available.

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- Definition

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 220
-Section S99
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- Definition

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.

+ References

No definition available.

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Related Party Transactions - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended	9 Months Ended		12 Months Ended
	May 31, 2019	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
7.75% Subordinated Notes due 2045
Related Party Transaction [Line Items]
Subordinated Notes percentage		7.75%			7.75%		7.75%
Subordinated Notes due date					2045		2045
7.875% Subordinated Notes due 2047
Related Party Transaction [Line Items]
Subordinated Notes percentage		7.875%			7.875%		7.875%
Subordinated Notes due date					2047		2047
Fox Paine Funds
Related Party Transaction [Line Items]
Company's total voting power		80.00%			80.00%
FM Entities
Related Party Transaction [Line Items]
Company's total voting power		2.00%			2.00%
Fox Paine Entities
Related Party Transaction [Line Items]
Minimum voting power required to nominate Directors		25.00%			25.00%
Fox Paine and Company
Related Party Transaction [Line Items]
Management fees		$ 0.5	$ 0.6		$ 1.5	$ 1.6
Accrued management fees		0.2			0.2
Prepaid management fees							$ 1.4
Advisory services fees estimated	$ 2.0
Fox Paine and Company \| Co-Obligor Transaction
Related Party Transaction [Line Items]
Advisory services fees estimated		$ 0.0		$ 12.5	$ 0.0