Resale and Repurchase Agreements (Tables)

9 Months Ended

Sep. 30, 2015

Resale and Repurchase Agreements [Abstract]

Resale and Repurchase Agreements [Table Text Block]

								Gross Amounts Not Offset in the Balance Sheet
(In thousands)	Gross Amount Recognized		Gross Amounts Offset in the Balance Sheet			Net Amounts Presented in the Balance Sheet		Financial Instruments		Securities Collateral Received/Pledged			Net Amount
September 30, 2015
Total resale agreements, subject to master netting arrangements	$	1,325,000	$	(350,000	)	$	975,000	$	—	$	(975,000	)	$	—
Total repurchase agreements, subject to master netting arrangements	1,981,497		(350,000		)	1,631,497		—		(1,631,497		)	—
December 31, 2014
Total resale agreements, subject to master netting arrangements	$	1,500,000	$	(450,000	)	$	1,050,000	$	—	$	(1,049,370	)	$	630
Total repurchase agreements, subject to master netting arrangements	2,308,678		(450,000		)	1,858,678		—		(1,858,678		)	—

Schedule of Underlying Assets of Repurchase Agreements [Table Text Block]

	Remaining Contractual Maturity of the Agreements
(In thousands)	Overnight and continuous		Up to 90 days		Greater than 90 days		Total
September 30, 2015
Repurchase agreements, secured by:
U.S. government and federal agency obligations	$	151,015	$	11,937	$	—	$	162,952
Government-sponsored enterprise obligations	361,228		3,298		17,928		382,454
Agency mortgage-backed securities	335,300		93,104		232,072		660,476
Asset-backed securities	690,615		85,000		—		775,615
Total repurchase agreements, gross amount recognized	$	1,538,158	$	193,339	$	250,000	$	1,981,497