Derivative Instruments - Derivatives Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Interest Rate Contract
Carrying amount of the hedged liability - Subordinated bank note - 2025	$ 160,694		$ 160,694		$ 151,454
Cumulative amount of fair value hedging adjustments included in the carrying amount of the hedged liability - Subordinated bank note - 2025	11,840		11,840		$ 2,773
Gains and losses related to changes in the fair vale of the interest rate swap and hedged debt
Interest expense on borrowings	11,429	$ 17,115	51,147	$ 48,050
Summary of Net Investment Hedge Activity [Abstract]
Effect of net investment hedges on accumulated other comprehensive income	(3,469)	2,170	4,272	(3,761)
Derivatives designated as hedges | Interest expense - borrowings
Gains and losses related to changes in the fair vale of the interest rate swap and hedged debt
Gain (loss) of fair value hedge: Hedged item	680	(2,100)	(9,068)	(8,847)
Gain (loss) of fair value hedge: Derivative designated as a hedging instrument	(731)	2,195	9,134	8,938
Gain (loss) on interest rate contract recognized in interest expense on borrowings	(51)	95	66	91
Derivatives designated as hedges | Net investment hedges | Forward foreign exchange contracts
Summary of Net Investment Hedge Activity [Abstract]
Effect of net investment hedges on accumulated other comprehensive income	$ (3,469)	$ 2,170	$ 4,272	$ (3,761)