Related party transactions - Proportionate share of income (loss) and changes in stockholder's equity from EVERTEC (Details) - EVERTEC Inc. - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Related Party Transaction [Line Items]
Share of income from investment	$ 7,967	$ 2,511	$ 13,716	$ 6,113
Share of other changes in stockholders equity	237	(119)	400	666
Share of changes in equity recognized in income	$ 8,204	$ 2,392	$ 14,116	$ 6,779

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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