Variable Interest Entities and Noncontrolling Interests - Redeemable noncontrolling interests (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2014
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests, beginning of period	$ 58,548
Redeemable noncontrolling interests, end of period	57,670
Watford Holdings Ltd
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests, beginning of period	58,548	$ 55,404
Accretion of preference share issuance costs	23	23
Other	(901)	(51)
Redeemable noncontrolling interests, end of period	$ 57,670	$ 55,376
Cumulative redeemable preference shares \| Watford Holdings Ltd
Redeemable Noncontrolling Interest [Line Items]
Par value per share			$ 0.01
Liquidation preference per share			25.00
Issue price per share			$ 24.50

Noncontrolling Interest Period Increase Decrease Other

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- Definition

Redeemable Noncontrolling Interest, Accretion of Issuance Costs

+ References

No definition available.

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- Definition

The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
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- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

As of the reporting date, the carrying amount of noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. The noncontrolling interest holder's ownership (or holders' ownership) may be in the form of preferred shares (regardless of class), preferred partnership units (regardless of class), preferential membership interests, or any other form of preferred equity regardless of investee entity legal form.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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

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- Definition

Per share or per unit amount of equity securities issued.

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