Consolidated Statements of Condition (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015		Dec. 31, 2014
Securities available-for-sale, pledged	$ 10,752		$ 11,436
Securities held to maturity, pledged	4,503,995		4,584,886
Securities held to maturity, fair value	6,812,774	[1]	7,085,971	[2]
Other real estate owned, covered by loss sharing agreements	$ 29,113		$ 32,048
Preferred stock, par	$ 0.01		$ 0.01
Preferred stock, shares authorized	5,000,000		5,000,000
Preferred stock, issued	0		0
Common stock, par	$ 0.01		$ 0.01
Common stock, shares authorized	600,000,000		600,000,000
Common stock, shares issued	444,343,024		442,659,460
Common stock, shares outstanding	444,319,494		442,587,190
Treasury stock, shares	23,530		72,270
Net unrealized gain on securities available for sale, tax	$ 1,130		$ 2,022
Net unrealized loss on the non-credit portion of other-than-temporary impairment losses on securities, tax	3,411		3,444
Net unrealized loss on pension and post-retirement obligations, tax	$ 33,480		$ 36,118

[1] Held-to-maturity securities are reported at a carrying amount equal to amortized cost less the non-credit portion of OTTI recorded in AOCL. At September 30, 2015, the non-credit portion of OTTI recorded in AOCL was $8.7 million (before tax).

[2] Held-to-maturity securities are reported at a carrying amount equal to amortized cost less the non-credit portion of OTTI recorded in AOCL. At December 31, 2014, the non-credit portion of OTTI recorded in AOCL was $8.8 million (before taxes).