Resale and Repurchase Agreements (Tables)

9 Months Ended

Sep. 30, 2020

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 Available for Offset		Securities Collateral Received/Pledged		Net Amount
September 30, 2020
Total resale agreements, subject to master netting arrangements	$	1,050,000	$	(200,000)	$	850,000	$	—	$	(850,000)	$	—
Total repurchase agreements, subject to master netting arrangements	1,846,294		(200,000)		1,646,294		—		(1,646,294)		—
December 31, 2019
Total resale agreements, subject to master netting arrangements	$	1,050,000	$	(200,000)	$	850,000	$	—	$	(850,000)	$	—
Total repurchase agreements, subject to master netting arrangements	2,030,737		(200,000)		1,830,737		—		(1,830,737)		—

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, 2020
Repurchase agreements, secured by:
U.S. government and federal agency obligations	$	146,935	$	—	$	—	$	146,935
Government-sponsored enterprise obligations	21,386		—		—		21,386
Agency mortgage-backed securities	1,167,467		58,729		214,896		1,441,092
Non-agency mortgage-backed securities	98,651		—		—		98,651
Asset-backed securities	103,861		—		—		103,861
Other debt securities	34,369		—		—		34,369
Total repurchase agreements, gross amount recognized	$	1,572,669	$	58,729	$	214,896	$	1,846,294
December 31, 2019
Repurchase agreements, secured by:
U.S. government and federal agency obligations	$	526,283	$	—	$	—	$	526,283
Government-sponsored enterprise obligations	32,575		—		—		32,575
Agency mortgage-backed securities	973,774		48,517		227,802		1,250,093
Non-agency mortgage-backed securities	71,399		—		—		71,399
Asset-backed securities	60,012		40,000		—		100,012
Other debt securities	50,375		—		—		50,375
Total repurchase agreements, gross amount recognized	$	1,714,418	$	88,517	$	227,802	$	2,030,737