Note Segment reporting (Geographic information) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	[1]	Dec. 31, 2015	[1]	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net Revenue	$ 1,719,991		$ 1,928,524		$ 1,331,587
PUERTO RICO
Segment Reporting Information [Line Items]
Net Revenue	1,361,663		1,598,066		1,024,416
UNITED STATES
Segment Reporting Information [Line Items]
Net Revenue	283,349		255,714		223,264
Other
Segment Reporting Information [Line Items]
Net Revenue	$ 74,979		$ 74,744		$ 83,907

[1] Total revenues include net interest income (expense) , service charges on deposit accounts, other service fees, mortgage banking activities, net gain (loss) and valuation adjustments on investment securities, trading account (loss) profit, net (loss) gain on sale of loans and valuation adjustments on loans held-for-sale, adjustments to indemnity reserves on loans sold, FDIC loss share ( expense ) income and other operating income .