Fair Value Measurement (Details) (USD $)	3 Months Ended							9 Months Ended				12 Months Ended
	Sep. 30, 2012		Dec. 31, 2011		Sep. 30, 2011		Dec. 31, 2010	Sep. 30, 2012		Sep. 30, 2011		Dec. 31, 2011		Dec. 31, 2010	Jun. 30, 2012	Mar. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset at Amortized Cost	$ 21,291,000		$ 21,179,000		$ 20,781,000		$ 21,317,000	$ 21,291,000		$ 20,781,000		$ 21,179,000		$ 21,317,000	$ 21,273,000	$ 21,094,000
Recurring Fair Value Measurements
Loans held for sale			30,077,000		39,340,000					39,340,000		30,077,000
Derivative Asset, Fair Value, Gross Asset	68,047,000		62,056,000		65,318,000			68,047,000		65,318,000		62,056,000
Derivative Liability, Fair Value, Gross Liability	84,938,000		86,106,000		89,657,000			84,938,000		89,657,000		86,106,000
Nonrecurring Fair Value Measurement [Abstract]
Mortgage servicing rights	17,294,000							17,294,000								16,866,000
Servicing Asset at Amortized Value, Valuation Allowance	(4,078,000)		(3,488,000)		(3,989,000)		(350,000)					(3,539,000)		0
Servicing Asset at Amortized Value, Recoveries	(590,000)				(3,639,000)			(539,000)		(3,989,000)		(3,500,000)
Impaired Financing Receivable, Related Allowance	8,444,000		7,080,000		6,671,000			8,444,000		6,671,000		7,080,000
Loss on Re-measurement of Foreclosed Assets, Fair Value Disclosure	100,000				1,000,000							5,400,000
Loss on Re-measurement of Covered Foreclosed Assets, Fair Value Disclosure	200,000				1,100,000							3,000,000
MSR Net Carrying Amount	17,213,000		17,600,000		16,792,000			17,213,000		16,792,000		17,600,000
Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	2,911,993,000		3,353,553,000		3,198,046,000			2,911,993,000		3,198,046,000		3,353,553,000
Loans held for sale	17,540,000		30,077,000		39,340,000			17,540,000		39,340,000		30,077,000
Derivative assets	68,047,000		62,056,000		65,318,000			68,047,000		65,318,000		62,056,000
Derivative Asset, Fair Value, Gross Asset	68,047,000		62,101,000		65,318,000			68,047,000		65,318,000		62,101,000
Total assets at fair value on a recurring and nonrecurring basis	2,997,580,000	[1]	3,445,686,000	[2]	3,302,704,000	[3]		2,997,580,000	[1]	3,302,704,000	[3]	3,445,686,000	[2]
Derivative liabilities	84,938,000		86,106,000		89,657,000			84,938,000		89,657,000		86,106,000
Derivative Liability, Fair Value, Gross Liability	84,938,000		86,150,000		89,657,000			84,938,000		89,657,000		86,150,000
True-up liability	12,642,000		11,551,000		11,913,000			12,642,000		11,913,000		11,551,000
Total liabilities at fair value on a recurring basis	97,580,000	[1]	97,657,000	[2]	101,570,000	[3]		97,580,000	[1]	101,570,000	[3]	97,657,000	[2]
Estimate of Fair Value, Fair Value Disclosure [Member] | Nonrecurring [Member]
Recurring Fair Value Measurements
Total assets at fair value on a recurring and nonrecurring basis	82,332,000		97,282,000		114,019,000			82,332,000		114,019,000		97,282,000
Nonrecurring Fair Value Measurement [Abstract]
Mortgage servicing rights	17,294,000	[4]	17,749,000	[5]	16,866,000	[6]		17,294,000	[4]	16,866,000	[6]	17,749,000	[5]
Impaired loans	44,010,000	[7]	56,739,000	[8]	59,155,000	[9]		44,010,000	[7]	59,155,000	[9]	56,739,000	[8]
Other property	6,333,000	[10]	4,087,000	[11]	8,648,000	[12]		6,333,000	[10]	8,648,000	[12]	4,087,000	[11]
Other real estate covered by loss share	14,695,000	[13]	18,707,000	[14]	29,350,000	[15]		14,695,000	[13]	29,350,000	[15]	18,707,000	[14]
Recorded Investment on Collateral Dependent Impaired Loans	52,500,000		64,500,000		66,200,000			52,500,000		66,200,000		64,500,000
Impaired Financing Receivable, Related Allowance	(8,500,000)		(7,700,000)		(7,100,000)			(8,500,000)		(7,100,000)		(7,700,000)
Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	3,245,000		3,299,000		3,715,000			3,245,000		3,715,000		3,299,000
Loans held for sale	0		0		0			0		0		0
Derivative assets	0		0		0			0		0		0
Derivative Asset, Fair Value, Gross Asset	0		0		0			0		0		0
Total assets at fair value on a recurring and nonrecurring basis	3,245,000	[1]	3,299,000	[2]	3,715,000	[3]		3,245,000	[1]	3,715,000	[3]	3,299,000	[2]
Derivative liabilities	0		0		0			0		0		0
Derivative Liability, Fair Value, Gross Liability	0		0		0			0		0		0
True-up liability	0		0		0			0		0		0
Total liabilities at fair value on a recurring basis	0	[1]	0	[2]	0	[3]		0	[1]	0	[3]	0	[2]
Level 1 [Member] | Nonrecurring [Member]
Recurring Fair Value Measurements
Total assets at fair value on a recurring and nonrecurring basis	0		0		0			0		0		0
Nonrecurring Fair Value Measurement [Abstract]
Mortgage servicing rights	0	[4]	0	[5]	0	[6]		0	[4]	0	[6]	0	[5]
Impaired loans	0	[7]	0	[8]	0	[9]		0	[7]	0	[9]	0	[8]
Other property	0	[10]	0	[11]	0	[12]		0	[10]	0	[12]	0	[11]
Other real estate covered by loss share	0	[13]	0	[14]	0	[15]		0	[13]	0	[15]	0	[14]
Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	2,861,244,000		3,262,715,000		3,103,290,000			2,861,244,000		3,103,290,000		3,262,715,000
Loans held for sale	17,540,000		30,077,000		39,340,000			17,540,000		39,340,000		30,077,000
Derivative assets	68,047,000		62,101,000		65,318,000			68,047,000		65,318,000		62,101,000
Derivative Asset, Fair Value, Gross Asset	68,047,000		62,101,000		65,318,000			68,047,000		65,318,000		62,101,000
Total assets at fair value on a recurring and nonrecurring basis	2,946,831,000	[1]	3,354,893,000	[2]	3,207,948,000	[3]		2,946,831,000	[1]	3,207,948,000	[3]	3,354,893,000	[2]
Derivative liabilities	84,938,000		86,150,000		89,657,000			84,938,000		89,657,000		86,150,000
Derivative Liability, Fair Value, Gross Liability	84,938,000		86,150,000		89,657,000			84,938,000		89,657,000		86,150,000
True-up liability	0		0		0			0		0		0
Total liabilities at fair value on a recurring basis	84,938,000	[1]	86,150,000	[2]	89,657,000	[3]		84,938,000	[1]	89,657,000	[3]	86,150,000	[2]
Level 2 [Member] | Nonrecurring [Member]
Recurring Fair Value Measurements
Total assets at fair value on a recurring and nonrecurring basis	0		0		0			0		0		0
Nonrecurring Fair Value Measurement [Abstract]
Mortgage servicing rights	0	[4]	0	[5]	0	[6]		0	[4]	0	[6]	0	[5]
Impaired loans	0	[7]	0	[8]	0	[9]		0	[7]	0	[9]	0	[8]
Other property	0	[10]	0	[11]	0	[12]		0	[10]	0	[12]	0	[11]
Other real estate covered by loss share	0	[13]	0	[14]	0	[15]		0	[13]	0	[15]	0	[14]
Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	47,504,000		87,539,000		91,041,000			47,504,000		91,041,000		87,539,000
Loans held for sale	0		0		0			0		0		0
Derivative assets	0		0		0			0		0		0
Derivative Asset, Fair Value, Gross Asset	0		0		0			0		0		0
Total assets at fair value on a recurring and nonrecurring basis	47,504,000	[1]	87,539,000	[2]	91,041,000	[3]		47,504,000	[1]	91,041,000	[3]	87,539,000	[2]
Derivative liabilities	0		0		0			0		0		0
Derivative Liability, Fair Value, Gross Liability	0		0		0			0		0		0
True-up liability	12,642,000		11,551,000		11,913,000			12,642,000		11,913,000		11,551,000
Total liabilities at fair value on a recurring basis	12,642,000	[1]	11,551,000	[2]	11,913,000	[3]		12,642,000	[1]	11,913,000	[3]	11,551,000	[2]
Level 3 [Member] | Nonrecurring [Member]
Recurring Fair Value Measurements
Total assets at fair value on a recurring and nonrecurring basis	82,332,000		97,282,000		114,019,000			82,332,000		114,019,000		97,282,000
Nonrecurring Fair Value Measurement [Abstract]
Mortgage servicing rights	17,294,000	[4]	17,749,000					17,294,000	[4]			17,749,000				16,866,000
Impaired loans	44,010,000	[7]	56,739,000	[8]	59,155,000	[9]		44,010,000	[7]	59,155,000	[9]	56,739,000	[8]
Other property	6,333,000	[10]	4,087,000	[11]	8,648,000	[12]		6,333,000	[10]	8,648,000	[12]	4,087,000	[11]
Other real estate covered by loss share	14,695,000	[13]	18,707,000	[14]	29,350,000	[15]		14,695,000	[13]	29,350,000	[15]	18,707,000	[14]
Not Designated as Hedging Instrument [Member]
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	68,047,000	[16]	62,101,000	[16]	65,318,000	[16]		68,047,000	[16]	65,318,000	[16]	62,101,000	[16]
Derivative Liability, Fair Value, Gross Liability	62,867,000	[17]	60,261,000	[17]	61,379,000	[17]		62,867,000	[17]	61,379,000	[17]	60,261,000	[17]
Interest Rate Swap [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	0		0		0			0		0		0
Derivative liabilities	22,071,000		25,889,000		28,278,000			22,071,000		28,278,000		25,889,000
Interest Rate Swap [Member] | Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	0		0		0			0		0		0
Derivative liabilities	0		0		0			0		0		0
Interest Rate Swap [Member] | Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	0		0		0			0		0		0
Derivative liabilities			25,889,000		28,278,000					28,278,000		25,889,000
Interest Rate Swap [Member] | Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	0		0		0			0		0		0
Derivative liabilities	0		0		0			0		0		0
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member]
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	62,796,000	[16]	58,875,000	[16]	61,299,000	[16]		62,796,000	[16]	61,299,000	[16]	58,875,000	[16]
Derivative Liability, Fair Value, Gross Liability	62,796,000	[17]	58,875,000	[17]	61,299,000	[17]		62,796,000	[17]	61,299,000	[17]	58,875,000	[17]
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	62,796,000		58,875,000		61,299,000			62,796,000		61,299,000		58,875,000
Derivative liabilities	62,796,000		58,875,000		61,299,000			62,796,000		61,299,000		58,875,000
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] | Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	0		0		0			0		0		0
Derivative liabilities	0		0		0			0		0		0
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] | Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets			58,875,000		61,299,000					61,299,000		58,875,000
Derivative Asset, Fair Value, Gross Asset	62,796,000							62,796,000
Derivative liabilities			58,875,000		61,299,000					61,299,000		58,875,000
Derivative Liability, Fair Value, Gross Liability	62,796,000							62,796,000
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] | Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	0		0		0			0		0		0
Derivative liabilities	0		0		0			0		0		0
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	0	[16]	0	[16]	0	[16]		0	[16]	0	[16]	0	[16]
Derivative Liability, Fair Value, Gross Liability	22,071,000	[17]	25,889,000	[17]	28,278,000	[17]		22,071,000	[17]	28,278,000	[17]	25,889,000	[17]
Mortgage Loan Commitments [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	7,394,000		4,959,000		5,525,000			7,394,000		5,525,000		4,959,000
Mortgage Loan Commitments [Member] | Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	0		0		0			0		0		0
Mortgage Loan Commitments [Member] | Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets			4,959,000		5,525,000					5,525,000		4,959,000
Derivative Asset, Fair Value, Gross Asset	7,394,000							7,394,000
Mortgage Loan Commitments [Member] | Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	0		0		0			0		0		0
Mortgage Loan Commitments [Member] | Not Designated as Hedging Instrument [Member]
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	7,394,000	[16]	4,959,000	[16]	5,525,000	[16]		7,394,000	[16]	5,525,000	[16]	4,959,000	[16]
Derivative Liability, Fair Value, Gross Liability	0	[17]	0	[17]	0	[17]		0	[17]	0	[17]	0	[17]
Forward Contracts [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	(2,223,000)		(1,798,000)		(1,591,000)			(2,223,000)		(1,591,000)		(1,798,000)
Forward Contracts [Member] | Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	0		0		0			0		0		0
Forward Contracts [Member] | Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets			(1,798,000)		(1,591,000)					(1,591,000)		(1,798,000)
Derivative Asset, Fair Value, Gross Asset	(2,223,000)							(2,223,000)
Forward Contracts [Member] | Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	0		0		0			0		0		0
Forward Contracts [Member] | Not Designated as Hedging Instrument [Member]
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	(2,223,000)	[16]	(1,798,000)	[16]	(1,591,000)	[16]		(2,223,000)	[16]	(1,591,000)	[16]	(1,798,000)	[16]
Derivative Liability, Fair Value, Gross Liability	0	[17]	0	[17]	0	[17]		0	[17]	0	[17]	0	[17]
Foreign Exchange [Member]
Recurring Fair Value Measurements
Derivative Liability, Fair Value, Gross Liability	71,000	[17]						71,000	[17]
Foreign Exchange [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	80,000		20,000		85,000			80,000		85,000		20,000
Derivative liabilities	71,000		18,000		80,000			71,000		80,000		18,000
Foreign Exchange [Member] | Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	0		0		0			0		0		0
Derivative liabilities	0		0		0			0		0		0
Foreign Exchange [Member] | Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets			65,000		85,000					85,000		65,000
Derivative Asset, Fair Value, Gross Asset	80,000							80,000
Derivative liabilities			62,000		80,000					80,000		62,000
Derivative Liability, Fair Value, Gross Liability	71,000							71,000
Foreign Exchange [Member] | Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative assets	0		0		0			0		0		0
Derivative liabilities	0		0		0			0		0		0
Foreign Exchange [Member] | Not Designated as Hedging Instrument [Member]
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	80,000	[16]	65,000	[16]	85,000	[16]		80,000	[16]	85,000	[16]	65,000	[16]
Derivative Liability, Fair Value, Gross Liability			62,000	[17]	80,000	[17]				80,000	[17]	62,000	[17]
Other Contract [Member]
Recurring Fair Value Measurements
Derivative Liability, Fair Value, Gross Liability	0	[17]						0	[17]
Other Contract [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative liabilities			1,324,000		0					0		1,324,000
Other Contract [Member] | Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative liabilities			0		0					0		0
Other Contract [Member] | Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative liabilities			1,324,000		0					0		1,324,000
Other Contract [Member] | Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Derivative liabilities			0		0					0		0
Other Contract [Member] | Not Designated as Hedging Instrument [Member]
Recurring Fair Value Measurements
Derivative Asset, Fair Value, Gross Asset	0	[16]	0	[16]	0	[16]		0	[16]	0	[16]	0	[16]
Derivative Liability, Fair Value, Gross Liability			1,324,000	[17]	0	[17]				0	[17]	1,324,000	[17]
Money Market Funds [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	3,245,000		3,299,000		3,715,000			3,245,000		3,715,000		3,299,000
Money Market Funds [Member] | Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	3,245,000		3,299,000		3,715,000			3,245,000		3,715,000		3,299,000
Money Market Funds [Member] | Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0		0		0			0		0		0
Money Market Funds [Member] | Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0		0		0			0		0		0
US Government Agency Debentures [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	35,137,000		123,069,000		203,718,000			35,137,000		203,718,000		123,069,000
US Government Agency Debentures [Member] | Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0		0		0			0		0		0
US Government Agency Debentures [Member] | Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	35,137,000		123,069,000		203,718,000			35,137,000		203,718,000		123,069,000
US Government Agency Debentures [Member] | Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0		0		0			0		0		0
US States and Political Subdivisions Debt Securities [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	258,418,000		357,731,000		314,441,000			258,418,000		314,441,000		357,731,000
US States and Political Subdivisions Debt Securities [Member] | Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0		0		0			0		0		0
US States and Political Subdivisions Debt Securities [Member] | Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	258,418,000		357,731,000		314,441,000			258,418,000		314,441,000		357,731,000
US States and Political Subdivisions Debt Securities [Member] | Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0		0		0			0		0		0
Residential Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	1,277,831,000		1,460,343,000		1,481,222,000			1,277,831,000		1,481,222,000		1,460,343,000
Residential Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0		0		0			0		0		0
Residential Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	1,277,831,000		1,460,343,000		1,481,222,000			1,277,831,000		1,481,222,000		1,460,343,000
Residential Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0		0		0			0		0		0
Commercial Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	15,667,000							15,667,000
Commercial Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0							0
Commercial Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	15,667,000							15,667,000
Commercial Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0							0
Residential Collateralized Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	1,205,525,000		1,137,835,000		1,103,906,000			1,205,525,000		1,103,906,000		1,137,835,000
Residential Collateralized Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0		0		0			0		0		0
Residential Collateralized Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	1,205,525,000		1,137,835,000		1,103,906,000			1,205,525,000		1,103,906,000		1,137,835,000
Residential Collateralized Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0		0		0			0		0		0
Residential Collateralized Mortgage Backed Securities Issued by Non Agency [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	12,000		43,307,000		44,857,000			12,000		44,857,000		43,307,000
Residential Collateralized Mortgage Backed Securities Issued by Non Agency [Member] | Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0		0		0			0		0		0
Residential Collateralized Mortgage Backed Securities Issued by Non Agency [Member] | Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	1,000		2,000		3,000			1,000		3,000		2,000
Residential Collateralized Mortgage Backed Securities Issued by Non Agency [Member] | Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	11,000		43,305,000		44,854,000			11,000		44,854,000		43,305,000
Commercial Collateralized Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	68,665,000		129,127,000		0			68,665,000		0		129,127,000
Commercial Collateralized Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0		0		0			0		0		0
Commercial Collateralized Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	68,665,000		129,127,000		0			68,665,000		0		129,127,000
Commercial Collateralized Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member] | Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0		0		0			0		0		0
Corporate Debt Securities [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	47,493,000		98,842,000		46,187,000			47,493,000		46,187,000		98,842,000
Corporate Debt Securities [Member] | Level 1 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0		0		0			0		0		0
Corporate Debt Securities [Member] | Level 2 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	0		54,608,000		0			0		0		54,608,000
Corporate Debt Securities [Member] | Level 3 [Member] | Recurring [Member]
Recurring Fair Value Measurements
Available for sale securities	$ 47,493,000		$ 44,234,000		$ 46,187,000			$ 47,493,000		$ 46,187,000		$ 44,234,000

[1] There were no transfers between levels 1 and 2 of the fair value hierarchy during the quarter ended September 30, 2012.

[2] There were no transfers between levels 1 and 2 of the fair value hierarchy during the quarter ended December 31, 2011.

[3] There were no transfers between levels 1 and 2 of the fair value hierarchy during the quarter ended September 30, 2011.

[4] with a recorded investment of $21.3 million were reduced by a specific valuation allowance totaling $4.1 million to a reported carrying value of $17.3 million resulting in recognition of $0.6 million in expense included in loans sales and servicing income in the quarter ended September 30, 2012.

[5] s with a recorded investment of $21.2 million were reduced by a specific valuation allowance totaling $3.5 million to a reported carrying value of $17.6 million resulting in the recognition of an impairment charge of $3.5 million in the year ended December 31, 2011.

[6] ecorded at carrying value of $16.8 million as of September 30, 2011.

[7] Collateral dependent impaired loans with a recorded investment of $52.5 million were reduced by specific valuation allowance allocations totaling $8.5 million to a reported net carrying value of $44.0 million.

[8] Collateral dependent impaired loans with a recorded investment of $64.5 million were reduced by specific valuation allowance allocations totaling $7.7 million to a reported net carrying value of $56.7 million.

[9] Collateral dependent impaired loans with a recorded investment of $66.2 million were reduced by specific valuation allowance allocations totaling $7.1 million to a reported net carrying value of $59.2 million.

[10] Amounts do not include assets held at cost at September 30, 2012. During the quarter ended September 30, 2012, the re-measurement of foreclosed assets at fair value subsequent to initial recognition resulted in losses of $0.1 million included in noninterest expense.

[11] Amounts do not include assets held at cost at December 31, 2011. During the year ended December 31, 2011, the re-measurement of foreclosed assets at fair value subsequent to initial recognition resulted in losses of $5.4 million included in noninterest expense.

[12] Amounts do not include assets held at cost at September 30, 2011. During the quarter ended September 30, 2011, the re-measurement of foreclosed assets at fair value subsequent to initial recognition resulted in losses of $1.0 million included in noninterest expense.

[13] Amounts do not include assets held at cost at September 30, 2012. During the quarter ended September 30, 2012, the re-measurement of covered foreclosed assets at fair value subsequent to initial recognition resulted in losses $0.2 million included in noninterest expense.

[14] Amounts do not include assets held at cost at December 31, 2011. During the year ended December 31, 2011, the re-measurement of covered foreclosed assets at fair value subsequent to initial recognition resulted in losses of $3.0 million included in noninterest expense.

[15] Amounts do not include assets held at cost at September 30, 2011. During the quarter ended September 30, 2011, the re-measurement of covered foreclosed assets at fair value subsequent to initial recognition resulted in losses of $1.1 million included in noninterest expense.

[16] Included in Other Assets on the Consolidated Balance Sheets

[17] Included in Other Liabilities on the Consolidated Balance Sheets