Comprehensive income (Tables)

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Components of Other Comprehensive Income (Loss) and Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) to Net Income

The following tables display the components of other comprehensive income (loss) and amounts reclassified from accumulated other comprehensive income (loss) to net income:

	Investment Securities						Defined Benefit						Total Amount				Income
	With OTTI (a)			All Other			Plans			Other			Before Tax				Tax			Net
	(In thousands)
Balance — January 1, 2017	$	46,725			(73,785	)		(449,917	)		(8,268	)	$	(485,245	)			190,609		$	(294,636	)
Other comprehensive income before reclassifications:
Unrealized holding gains (losses), net		(13,802	)		37,728			—			—			23,926				(9,404	)		14,522
Foreign currency translation adjustment		—			—			—			2,502			2,502				(876	)		1,626
Unrealized losses on cash flow hedges		—			—			—			(441	)		(441	)			174			(267	)
Total other comprehensive income (loss) before    reclassifications		(13,802	)		37,728			—			2,061			25,987				(10,106	)		15,881
Amounts reclassified from accumulated other    comprehensive income that (increase) decrease    net income:
Amortization of unrealized holding losses on    held-to-maturity (“HTM”) securities		—			1,721			—			—			1,721		(b)		(677	)		1,044
(Gains) losses realized in net income		(50	)		67			—			—			17		(c)		(7	)		10
Accretion of net gain on terminated cash flow    hedges		—			—			—			(78	)		(78	)	(d)		31			(47	)
Net yield adjustment from cash flow hedges currently in    effect		—			—			—			(1,094	)		(1,094	)	(b)		430			(664	)
Amortization of prior service credit		—			—			(400	)		—			(400	)	(e)		157			(243	)
Amortization of actuarial losses		—			—			14,137			—			14,137		(e)		(5,563	)		8,574
Total reclassifications		(50	)		1,788			13,737			(1,172	)		14,303				(5,629	)		8,674
Total gain (loss) during the period		(13,852	)		39,516			13,737			889			40,290				(15,735	)		24,555
Balance — June 30, 2017	$	32,873			(34,269	)		(436,180	)		(7,379	)	$	(444,955	)			174,874		$	(270,081	)
Balance — January 1, 2016	$	16,359			62,849			(489,660	)		(4,093	)	$	(414,545	)			162,918		$	(251,627	)
Other comprehensive income before reclassifications:
Unrealized holding gains, net		9,260			227,118			—			—			236,378				(93,010	)		143,368
Foreign currency translation adjustment		—			—			—			(2,489	)		(2,489	)			871			(1,618	)
Total other comprehensive income (loss) before    reclassifications		9,260			227,118			—			(2,489	)		233,889				(92,139	)		141,750
Amounts reclassified from accumulated other    comprehensive income that (increase) decrease    net income:
Accretion of unrealized holding losses on    HTM securities		—			2,081			—			—			2,081		(b)		(819	)		1,262
Gains realized in net income		—			(268	)		—			—			(268	)	(c)		102			(166	)
Accretion of net gain on terminated cash flow    hedges		—			—			—			(77	)		(77	)	(d)		30			(47	)
Amortization of prior service credit		—			—			(2,294	)		—			(2,294	)	(e)		902			(1,392	)
Amortization of actuarial losses		—			—			15,103			—			15,103		(e)		(5,904	)		9,199
Total reclassifications		—			1,813			12,809			(77	)		14,545				(5,689	)		8,856
Total gain (loss) during the period		9,260			228,931			12,809			(2,566	)		248,434				(97,828	)		150,606
Balance — June 30, 2016	$	25,619			291,780			(476,851	)		(6,659	)	$	(166,111	)			65,090		$	(101,021	)

(a) Other-than-temporary impairment

(b) Included in interest income

(c) Included in gain (loss) on bank investment securities

(d) Included in interest expense

(e) Included in salaries and employee benefits expense

Accumulated Other Comprehensive Income (Loss), Net

Accumulated other comprehensive income (loss), net consisted of the following:

	Investment Securities						Defined Benefit
	With OTTI			All Other			Plans			Other			Total
	(In thousands)
Balance — December 31, 2016	$	28,338			(44,657	)		(272,874	)		(5,443	)	$	(294,636	)
Net gain (loss) during period		(8,400	)		23,976			8,331			648			24,555
Balance — June 30, 2017	$	19,938			(20,681	)		(264,543	)		(4,795	)	$	(270,081	)