Investment Securities (Tables)

3 Months Ended

Mar. 31, 2013

Investments, Debt and Equity Securities [Abstract]

Schedule Of Investment Securities

Investment securities at December 31, 2012, were as follows:

Securities Available-for-Sale (In thousands)	Amortized  cost		Gross unrealized holding gains		Gross unrealized holding losses		Estimated fair value
Obligations of U.S. Treasury and other U.S. Government sponsored entities	$	695,655	$	1,352	$	1,280	$	695,727
Obligations of states and political subdivisions	984		19		—		1,003
U.S. Government sponsored entities' asset-backed securities	401,882		14,067		447		415,502
Other equity securities	1,137		1,085		—		2,222
Total	$	1,099,658	$	16,523	$	1,727	$	1,114,454

Securities Held-to-Maturity (In thousands)	Amortized  cost		Gross unrecognized holding gains		Gross unrecognized holding losses		Estimated fair value
Obligations of states and political subdivisions	$	570	$	2	$	—	$	572
U.S. Government sponsored entities' asset-backed securities	400,820		9,351		38		410,133
Total	$	401,390	$	9,353	$	38	$	410,705

Investment securities at March 31, 2013, were as follows:

Securities Available-for-Sale (In thousands)	Amortized Cost		Gross Unrealized Holding  Gains		Gross Unrealized Holding  Losses		Estimated  Fair Value
Obligations of U.S. Treasury and other U.S. Government sponsored entities	$	570,639	$	338	$	2,957	$	568,020
Obligations of states and political subdivisions	984		11		—		995
U.S. Government sponsored entities' asset-backed securities	417,356		12,869		358		429,867
Other equity securities	1,137		1,232		—		2,369
Total	$	990,116	$	14,450	$	3,315	$	1,001,251

Securities Held-to-Maturity (In thousands)	Amortized Cost		Gross Unrecognized Holding  Gains		Gross Unrecognized Holding  Losses		Estimated Fair Value
Obligations of states and political subdivisions	$	485	$	1	$	—	$	486
U.S. Government sponsored entities' asset-backed securities	284,765		9,063		—		293,828
Total	$	285,250	$	9,064	$	—	$	294,314

Schedule Of Unrealized Loss On Securities

Securities with unrealized losses at December 31, 2012, were as follows:

	Less than 12 months				12 months or longer				Total
(In thousands)	Fair value		Unrealized losses		Fair value		Unrealized losses		Fair value		Unrealized losses
Securities Available-for-Sale
Obligations of U.S. Treasury and other U.S. Government sponsored entities	$	177,470	$	1,280	$	—	$	—	$	177,470	$	1,280
U.S. Government sponsored entities' asset-backed securities	$	123,631	$	447	$	—	$	—	$	123,631	$	447
Total	$	301,101	$	1,727	$	—	$	—	$	301,101	$	1,727
Securities Held-to-Maturity
U.S. Government sponsored entities' asset-backed securities	$	10,120	$	38	$	—	$	—	$	10,120	$	38

Securities with unrealized losses at March 31, 2013, were as follows:

	Less than 12 months				12 months or longer				Total
(In thousands)	Fair value		Unrealized losses		Fair value		Unrealized losses		Fair value		Unrealized losses
Securities Available-for-Sale
Obligations of U.S. Treasury and other U.S. Government agencies	$	387,683	$	2,957	$	—	$	—	$	387,683	$	2,957
U.S. Government agencies' asset-backed securities	$	171,450	$	358	$	—	$	—	$	171,450	$	358
Total	$	559,133	$	3,315	$	—	$	—	$	559,133	$	3,315

Amortized Cost And Estimated Fair Value Of Investments In Debt Securities By Contractual Maturity

The amortized cost and estimated fair value of investments in debt securities at March 31, 2013, are shown in the following table by contractual maturity or the expected call date, except for asset-backed securities, which are shown as a single total, due to the unpredictability of the timing of principal repayments.

Securities Available-for-Sale (In thousands)	Amortized cost		Fair value
U.S. Treasury and sponsored entities' obligations:
Due within one year	$	180,000	$	180,338
Due one through five years	173,750		171,548
Due five through ten years	216,889		216,134
Total	$	570,639	$	568,020
Obligations of states and political subdivisions:
Due within one year	$	984	$	995
U.S. Government sponsored entities' asset-backed securities:	$	417,356	$	429,867

Securities Held-to-Maturity (In thousands)	Amortized cost		Fair value
Obligations of state and political subdivisions:
Due within one year	$	485	$	486
U.S. Government sponsored entities' asset-backed securities:	$	284,765	$	293,828