Securities (Tables)

3 Months Ended

Mar. 31, 2012

Securities [Abstract]

Amortized cost and fair value of available for sale securities

March 31, 2012									December 31, 2011
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value			Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
U.S. Treasury	$	150	$	13	$	—	$	163		$	150	$	14	$	—	$	164
U.S. government agencies		168,409		562		—		168,971			248,595		1,308		—		249,903
Municipal obligations		94,843		1,118		38		95,923			294,489		15,218		42		309,665
Mortgage-backed securities		2,232,306		62,927		336		2,294,897			2,422,891		58,150		696		2,480,345
CMOs		—		—		—		—			1,426,495		21,774		2,193		1,446,076
Other debt securities		3,750		—		—		3,750			4,517		11		34		4,494
Other equity securities		13,749		1,088		10		14,827			4,208		2,086		41		6,253
	$	2,513,207	$	65,708	$	384	$	2,578,531		$	4,401,345	$	98,561	$	3,006	$	4,496,900

Amortized cost and fair value of held to maturity securities

			March 31, 2012									December 31, 2011
	Amortized Cost			Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Amortized Cost			Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Municipal obligations	$	182,471		$	—	$	—	$	182,471		—			—		—		—
Mortgage-backed securities		153,864			—		1,096		152,768		—			—		—		—
CMOs		1,478,979			385		—		1,479,364		—			—		—		—
	$	1,815,314		$	385	$	1,096	$	1,814,603		—			—		—		—

Amortized cost and fair value of securities by contractual maturity

Amortized Cost			Fair Value
Securities Available for Sale
Due in one year or less	$	217,412		$	218,057
Due after one year through five years		61,956			63,133
Due after five years through ten years		290,851			300,361
Due after ten years		1,938,703			1,991,617
Equity securities		4,285			5,363
Total available for sale securities	$	2,513,207		$	2,578,531

	Amortized Cost		Fair Value
Held to maturity
Due in one year or less	$	16,838	$	16,940
Due after one year through five years		187,112		191,205
Due after five years through ten years		100,147		108,840
Due after ten years		1,511,217		1,497,618
Total held to maturity securities	$	1,815,314	$	1,814,603

Available for sale securities unrealized losses

Available for sale

	Losses < 12 months				Losses 12 months or >				Total
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
U.S. Treasury	$	—	$	—	$	—	$	—	$	—	$	—
U.S. government agencies		—		—		—		—		—		—
Municipal obligations		8,992		35		569		3		9,561		38
Mortgage-backed securities		39,066		333		300		3		39,366		336
CMOs		—		—		—		—		—		—
Other debt securities		—		—		—		—		—		—
Equity securities		215		8		2		2		217		10
	$	48,273	$	376	$	871	$	8	$	49,144	$	384

Available for sale
	Losses < 12 months				Losses 12 months or >				Total
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
U.S. Treasury	$	—	$	—	$	—	$	—	$	—	$	—
U.S. government agencies		—		—		—		—		—		—
Municipal obligations		18,854		42		—		—		18,854		42
Mortgage-backed securities		212,900		692		337		4		213,237		696
CMOs		296,860		2,193		—		—		296,860		2,193
Other debt securities		398		34		—		—		398		34
Equity securities		1,685		39		2		2		1,687		41
	$	530,697	$	3,000	$	339	$	6	$	531,036	$	3,006

Held to maturity with unrealized losses

Losses < 12 months					Losses 12 months or >					Total
	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
Mortgage-backed securities	$	—	$	—		$	152,768	$	1,096		$	152,768	$	1,096
	$	—	$	—		$	152,768	$	1,096		$	152,768	$	1,096