Non-controlling interests and redeemable non-controlling interests - Change in Redeemable non-controlling Interest (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Increase (Decrease) in Temporary Equity [Roll Forward]
Opening balance	$ 20,859	$ 25,913
Net effect from operations	(6,902)	(6,955)
Contributions, net of costs	0	3,717
Dividends and distributions declared	(968)	(951)
Repurchase of non-controlling interest	0	(865)
Closing balance	12,989	20,859
Related Party
Increase (Decrease) in Temporary Equity [Roll Forward]
Opening balance	306,316	305,863
Net effect from operations	10,435	12,651
Contributions, net of costs	0	0
Dividends and distributions declared	(10,214)	(12,198)
Repurchase of non-controlling interest	0	0
Closing balance	$ 306,537	$ 306,316

Redeemable Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of Net Income (Loss) attributable to redeemable noncontrolling interest.

+ References

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-Name Accounting Standards Codification
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- Definition

Amount of increase in noncontrolling interest from sale of a portion of the parent's controlling interest.

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- Definition

As of the reporting date, the aggregate carrying amount of all 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. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

+ References

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