Note Related party transactions (Proportionate share of income (loss) and changes in stockholder's equity from EVERTEC) (Detail) - EVERTEC Inc. - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Related Party Transaction [Line Items]
Share of income (loss) from investment	$ 3,200	$ 3,243	$ 6,904	$ 6,943
Share of other changes in stockholders equity	506	1,049	635	1,668
Income (Loss) from Equity Method Investments, Total	$ 3,706	$ 4,292	$ 7,539	$ 8,611