Investment Securities (Tables)

6 Months Ended

Jun. 30, 2012

Investments, Debt and Equity Securities [Abstract]

Schedule Of Investment Securities

Investment securities at December 31, 2011, 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	$	370,043	$	1,614	$	—	$	371,657
Obligations of states and political subdivisions	2,616		44		—		2,660
U.S. Government sponsored entities asset-backed securities	427,300		16,995		—		444,295
Other equity securities	1,188		877		32		2,033
Total	$	801,147	$	19,530	$	32	$	820,645

Securities Held-to-Maturity	Amortized  cost		Gross unrecognized holding gains		Gross unrecognized holding losses		Estimated fair value
Obligations of states and political subdivisions	$	1,992	$	5	$	—	$	1,997
U.S. Government sponsored entities asset-backed securities	818,232		14,377		32		832,577
Total	$	820,224	$	14,382	$	32	$	834,574

Investment securities at June 30, 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	$	490,000	$	1,961	$	192	$	491,769
Obligations of states and political subdivisions	2,615		35		—		2,650
U.S. Government sponsored entities asset-backed securities	352,970		17,622		—		370,592
Other equity securities	1,134		1,002		—		2,136
Total	$	846,719	$	20,620	$	192	$	867,147

Securities Held-to-Maturity	Amortized Cost		Gross Unrecognized Holding  Gains		Gross Unrecognized Holding  Losses		Estimated Fair Value
Obligations of states and political subdivisions	$	1,127	$	3	$	—	$	1,130
U.S. Government sponsored entities asset-backed securities	754,095		12,851		—		766,946
Total	$	755,222	$	12,854	$	—	$	768,076

Schedule Of Unrealized Loss On Securities

Securities with unrealized losses at June 30, 2012, were as follows:

(in thousands)	Less than 12 months				12 months or longer				Total
Securities Available-for-Sale	Fair value		Unrealized losses		Fair value		Unrealized losses		Fair value		Unrealized losses
Obligations of U.S. Treasury and other U.S. Government agencies	$	89,808	$	192	$	—	$	—	$	89,808	$	192
Total	$	89,808	$	192	$	—	$	—	$	89,808	$	192

Securities with unrealized losses at December 31, 2011, were as follows:

(in thousands)	Less than 12 months				12 months or longer				Total
Securities Available-for-Sale	Fair value		Unrealized losses		Fair value		Unrealized losses		Fair value		Unrealized losses
Other equity securities	$	—	$	—	$	80	$	32	$	80	$	32
Securities Held-to-Maturity
U.S. Government sponsored entities asset-backed securities	$	—	$	—	$	38,775	$	32	$	38,775	$	32

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 June 30, 2012, 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 in principal repayments.

(in thousands)	Amortized cost		Fair value
Securities Available-for-Sale
U.S. Treasury and sponsored entities notes:
Due within one year	$	400,000	$	401,961
Due one through five years	—		—
Due five through ten years	90,000		89,808
Total	$	490,000	$	491,769
Obligations of states and political subdivisions:
Due within one year	$	2,120	$	2,131
Due one through five years	495		519
	$	2,615	$	2,650
U.S. Government sponsored entities asset-backed securities:
Total	$	352,970	$	370,592

(in thousands)	Amortized cost		Fair value
Securities Held-to-Maturity
Obligations of state and political subdivisions:
Due within one year	$	1,037	$	1,040
Due one through five years	90		90
Total	$	1,127	$	1,130
U.S. Government sponsored entities asset-backed securities:
Total	$	754,095	$	766,946