Available for Sale Securities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended														3 Months Ended																		3 Months Ended																																				3 Months Ended						66 Months Ended		3 Months Ended		66 Months Ended						3 Months Ended		66 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013		Dec. 31, 2013		Jun. 30, 2014 Fixed Maturity Securities [Member]		Jun. 30, 2014 U.S. Treasury [Member]		Dec. 31, 2013 U.S. Treasury [Member]		Jun. 30, 2013 U.S. Treasury [Member]		Jun. 30, 2014 Municipal and other tax-exempt securities [Member]		Dec. 31, 2013 Municipal and other tax-exempt securities [Member]		Jun. 30, 2013 Municipal and other tax-exempt securities [Member]		Jun. 30, 2014 Commercial mortgage-backed securities guaranteed by U.S. government agencies [Member]		Dec. 31, 2013 Commercial mortgage-backed securities guaranteed by U.S. government agencies [Member]		Jun. 30, 2013 Commercial mortgage-backed securities guaranteed by U.S. government agencies [Member]		Jun. 30, 2014 Other debt securities [Member]		Dec. 31, 2013 Other debt securities [Member]		Jun. 30, 2013 Other debt securities [Member]		Jun. 30, 2014 Residential Mortgage Backed Securities [Member]		Dec. 31, 2013 Residential Mortgage Backed Securities [Member]		Jun. 30, 2013 Residential Mortgage Backed Securities [Member]		Jun. 30, 2014 U.S. agency residential mortgage-backed securities [Member]		Dec. 31, 2013 U.S. agency residential mortgage-backed securities [Member]		Jun. 30, 2013 U.S. agency residential mortgage-backed securities [Member]		Jun. 30, 2014 U.S. agency residential mortgage-backed securities [Member] Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]		Dec. 31, 2013 U.S. agency residential mortgage-backed securities [Member] Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]		Jun. 30, 2013 U.S. agency residential mortgage-backed securities [Member] Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]		Jun. 30, 2014 U.S. agency residential mortgage-backed securities [Member] Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member]		Dec. 31, 2013 U.S. agency residential mortgage-backed securities [Member] Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member]		Jun. 30, 2013 U.S. agency residential mortgage-backed securities [Member] Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member]		Jun. 30, 2014 U.S. agency residential mortgage-backed securities [Member] Government National Mortgage Association Certificates and Obligations (GNMA) [Member]		Dec. 31, 2013 U.S. agency residential mortgage-backed securities [Member] Government National Mortgage Association Certificates and Obligations (GNMA) [Member]		Jun. 30, 2013 U.S. agency residential mortgage-backed securities [Member] Government National Mortgage Association Certificates and Obligations (GNMA) [Member]		Jun. 30, 2014 U.S. agency residential mortgage-backed securities [Member] Other [Member]		Dec. 31, 2013 U.S. agency residential mortgage-backed securities [Member] Other [Member]		Jun. 30, 2013 U.S. agency residential mortgage-backed securities [Member] Other [Member]		Jun. 30, 2014 Privately issued residential mortgage-backed securities [Member]		Dec. 31, 2013 Privately issued residential mortgage-backed securities [Member]		Jun. 30, 2013 Privately issued residential mortgage-backed securities [Member]		Jun. 30, 2014 Privately issued residential mortgage-backed securities [Member]		Jun. 30, 2014 Privately issued residential mortgage-backed securities [Member] Alt-A [Member]		Jun. 30, 2014 Privately issued residential mortgage-backed securities [Member] Alt-A [Member]		Dec. 31, 2013 Privately issued residential mortgage-backed securities [Member] Alt-A [Member]		Jun. 30, 2013 Privately issued residential mortgage-backed securities [Member] Alt-A [Member]		Jun. 30, 2014 Privately issued residential mortgage-backed securities [Member] Jumbo-A Loans [Member]		Jun. 30, 2014 Privately issued residential mortgage-backed securities [Member] Jumbo-A Loans [Member]		Dec. 31, 2013 Privately issued residential mortgage-backed securities [Member] Jumbo-A Loans [Member]		Jun. 30, 2013 Privately issued residential mortgage-backed securities [Member] Jumbo-A Loans [Member]		Jun. 30, 2014 Perpetual Preferred, Equity Securities and Mutual Funds [Member]	Jun. 30, 2014 Perpetual preferred stock [Member]		Dec. 31, 2013 Perpetual preferred stock [Member]		Jun. 30, 2013 Perpetual preferred stock [Member]		Jun. 30, 2014 Equity securities and mutual funds [Member]		Dec. 31, 2013 Equity securities and mutual funds [Member]		Jun. 30, 2013 Equity securities and mutual funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	$ 9,613,666		$ 10,655,841		$ 9,613,666		$ 10,655,841		$ 10,185,091		$ 2,228,976		$ 1,023		$ 1,042		$ 1,061		$ 63,931		$ 73,232		$ 95,974		$ 2,129,521		$ 2,100,146		$ 1,885,585		$ 34,501		$ 35,061		$ 35,622		$ 7,343,012		$ 7,934,370		$ 8,595,437		$ 7,174,193		$ 7,720,189		$ 8,303,052		$ 4,297,579		$ 4,224,327		$ 4,648,337		$ 2,055,924		$ 2,308,341		$ 2,695,506		$ 815,201		$ 1,151,225		$ 916,646		$ 5,489		$ 36,296		$ 42,563		$ 168,819		$ 214,181		$ 292,385		$ 168,819		$ 70,880		$ 70,880		$ 104,559		$ 113,804		$ 97,939		$ 97,939		$ 109,622		$ 178,581		$ 41,678	$ 22,171		$ 22,171		$ 22,172		$ 19,507		$ 19,069		$ 19,990
Available-for-sale Securities, Fair Value	9,699,146		10,698,074		9,699,146		10,698,074		10,147,162		2,215,817		1,024		1,042		1,060		64,970		73,775		95,103		2,115,295		2,055,804		1,846,943		34,528		35,241		35,894		7,438,546		7,937,109		8,669,970		7,259,504		7,716,010		8,372,795		4,364,168		4,232,332		4,687,141		2,068,940		2,293,943		2,715,896		820,454		1,152,128		925,081		5,942		37,607		44,677		179,042		221,099		297,175		179,042		75,700		75,700		107,212		115,036		103,342		103,342		113,887		182,139		44,783	24,730		22,863		25,583		20,053		21,328		23,521
Available-for-sale Securities, Gross Unrealized Gain	140,165	[1]	141,240	[1]	140,165	[1]	141,240	[1]	120,120	[1]			1	[1]	0	[1]	0	[1]	1,624	[1]	1,606	[1]	1,653	[1]	5,539	[1]	1,042	[1]	343	[1]	195	[1]	368	[1]	479	[1]	129,467	[1]	114,073	[1]	131,590	[1]	118,758	[1]	104,713	[1]	124,556	[1]	82,436	[1]	68,154	[1]	78,285	[1]	27,019	[1]	25,813	[1]	32,994	[1]	8,850	[1]	9,435	[1]	11,163	[1]	453	[1]	1,311	[1]	2,114	[1]	10,709	[1]	9,360	[1]	7,034	[1]	10,709	[1]	4,820	[1]	4,820	[1]	4,386	[1]	2,905	[1]	5,889	[1]	5,889	[1]	4,974	[1]	4,129	[1]		2,559	[1]	705	[1]	3,439	[1]	780	[1]	2,326	[1]	3,736	[1]
Available-for-sale Securities, Gross Unrealized Loss	(54,199)	[1]	(96,383)	[1]	(54,199)	[1]	(96,383)	[1]	(155,607)	[1]			0	[1]	0	[1]	(1)	[1]	(585)	[1]	(1,063)	[1]	(1,870)	[1]	(19,765)	[1]	(45,384)	[1]	(38,985)	[1]	(168)	[1]	(188)	[1]	(207)	[1]	(33,447)	[1]	(108,892)	[1]	(55,087)	[1]	(33,447)	[1]	(108,892)	[1]	(54,813)	[1]	(15,847)	[1]	(60,149)	[1]	(39,481)	[1]	(14,003)	[1]	(40,211)	[1]	(12,604)	[1]	(3,597)	[1]	(8,532)	[1]	(2,728)	[1]	0	[1]	0	[1]	0	[1]	0	[1]	0	[1]	(274)	[1]	0	[1]	0	[1]	0	[1]	0	[1]	0	[1]	0	[1]	0	[1]	0	[1]	(274)	[1]		0	[1]	(13)	[1]	(28)	[1]	(234)	[1]	(67)	[1]	(205)	[1]
Available-for-Sale Securities, Other Than Temporary Impairments	(486)	[2]	(2,624)	[2]	(486)	[2]	(2,624)	[2]	(2,442)	[2]			0	[2]	0	[2]	0	[2]	0	[2]	0	[2]	(654)	[2]	0	[2]	0	[2]	0	[2]	0	[2]	0	[2]	0	[2]	(486)	[2]	(2,442)	[2]	(1,970)	[2]	0	[2]	0	[2]	0	[2]	0	[2]	0	[2]	0	[2]	0	[2]	0	[2]	0	[2]	0	[2]	0	[2]	0	[2]	0	[2]	0	[2]	0	[2]	(486)	[2]	(2,442)	[2]	(1,970)	[2]	(486)	[2]	0	[2]	0	[2]	(1,733)	[2]	(1,673)	[2]	(486)	[2]	(486)	[2]	(709)	[2]	(297)	[2]		0	[2]	0	[2]	0	[2]	0	[2]	0	[2]	0	[2]
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Rolling Maturity [Abstract]
Available-for-sale Securities, Debt Maturities, Less than One Year, Amortized Cost Basis											34,528		1,023						3,404						0						30,101
Available-for-sale Securities, Debt Maturities, One to Five Years, Amortized Cost Basis											660,293		0						33,797						626,496						0
Available-for-sale Securities, Debt Maturities, Six To Ten Years, Amortized Cost Basis											1,159,043		0						2,778						1,156,265						0
Available-for-sale Securities, Debt Maturities, Over Ten Years, Amortized Cost Basis											375,112		0						23,952						346,760						4,400
Available-for-sale Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract]
Available-for-sale Securities, Debt Maturities, Less than One Year, Fair Value											34,753		1,024						3,432						0						30,297
Available-for-sale Securities, Debt Maturities, One to Five Years, Fair Value											659,973		0						35,004						624,969						0
Available-for-sale Securities, Debt Maturities, Six to Ten Years, Fair Value											1,149,964		0						3,032						1,146,932						0
Available-for-sale Securities, Debt Maturities, Over Ten Years, Fair Value											371,127		0						23,502						343,394						4,231
Available-for-sale Securities, Debt Maturities, Nominal Yield [Abstract]
Available-for-sale Securities, Debt Maturities, Less than One Year, Nominal Yield											1.97%		0.24%						3.96%	[3]					0.00%						1.80%
Available-for-sale Securities, Debt Maturities, One to Five Years, Nominal Yield											1.44%		0.00%						4.00%	[3]					1.30%						0.00%
Available-for-sale Securities, Debt Maturities, Six To Ten Years, Nominal Yield											1.64%		0.00%						6.25%	[3]					1.63%						0.00%
Available-for-sale Securities, Debt Maturities, Over Ten Years, Nominal Yield											1.32%		0.00%						1.92%	[3],[4]					1.27%						1.71%	[4]
Available-for-sale Securities, Debt Maturities, Nominal Yield	1.79%				1.79%						1.53%		0.24%						3.32%	[3]					1.47%						1.79%						1.87%	[5]																																																											1.26%
Available-for-sale Securities, Debt Maturities, Weighted Average Maturity											8.77	[6]	0.63	[6]					8.67	[6]					8.84	[6]					4.64	[6]
Available-for-sale Securities, Debt Maturities, Effective tax rate for nominal yield calculation																			39.00%
Available-for-sale Securities, Debt Maturities, Average Expected Life of Mortgage-backed Securities																																					3 years 6 months
Available-for-sale Securities, Debt Maturities, Number of days for interest rates to reset																			35 days
Available-for-sale Securities, Gross Realized Gain (Loss), Disclosures [Abstract]
Available-for-sale Securities, Proceeds	800,405		1,083,001		1,331,190		1,784,881
Available-for-sale Securities, Gross realized gains	9,894		9,992		16,327		15,784
Available-for-sale Securities, Gross realized losses	(9,890)		(6,239)		(15,083)		(7,176)
Available-for-sale Securities, Related federal and state income tax expense	2		1,460		484		3,349
Available-for-sale Securities, Pledged as Collateral [Abstract]
Available-for-sale Securities, Pledged As Collateral, Amortized cost	5,556,130		5,078,098		5,556,130		5,078,098		5,171,782
Available-for-sale Securities, Pledged As Collateral, Fair value	5,583,008		5,103,507		5,583,008		5,103,507		5,133,530
Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	289		347		289		347		446								1		23		27		86	[7]	96		123		113		2		3		4		88		174		135		77		158		123		33		81		72		37		50		38		7		27		13								11	[8]	16	[9]	12	[7]	11	[8]	0	[8]	0	[8]	7	[9]	10	[7]	11	[8]	11	[8]	9	[9]	2	[7]		0		1		1		80		118		7
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, OTTI Portion, Number of Positions																							21																																																										0		0		7		10		11		11		9		2
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	473,163		5,476,851		473,163		5,476,851		6,230,595								1,060		571		13,286		66,168	[7]	114,048		1,800,717		1,730,306		0		4,712		5,193		353,246		4,404,822		3,665,593		333,270		4,379,137		3,596,297		0		2,281,491		2,196,603		255,401		1,450,588		1,202,545		77,869		647,058		197,149								19,976	[8]	25,685	[9]	69,296	[7]	19,976	[8]	0	[8]	0	[8]	11,043	[9]	51,681	[7]	19,976	[8]	19,976	[8]	14,642	[9]	17,615	[7]		0		4,988		4,973		5,298		2,070		3,558
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	3,027,527		15,677		3,027,527		15,677		50,865								0		22,270		17,805		0	[7]	1,242,462		2,286		0		4,231		0		0		1,757,258		30,774		15,677		1,757,258		0		0		890,711		0		0		712,951		0		0		153,596		0		0								0	[8]	30,774	[9]	15,677	[7]	0	[8]	0	[8]	0	[8]	30,774	[9]	3,379	[7]	0	[8]	0	[8]	0	[9]	12,298	[7]		0		0		0		1,306		0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	3,500,690		5,492,528		3,500,690		5,492,528		6,281,460								1,060		22,841		31,091		66,168	[7]	1,356,510		1,803,003		1,730,306		4,231		4,712		5,193		2,110,504		4,435,596		3,681,270		2,090,528		4,379,137		3,596,297		890,711		2,281,491		2,196,603		968,352		1,450,588		1,202,545		231,465		647,058		197,149								19,976	[8]	56,459	[9]	84,973	[7]	19,976	[8]	0	[8]	0	[8]	41,817	[9]	55,060	[7]	19,976	[8]	19,976	[8]	14,642	[9]	29,913	[7]		0		4,988		4,973		6,604		2,070		3,558
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than Twelve Months, OTTI Portion, Fair Value																							11,731																																																										0		0		11,043		51,681		19,976		19,976		14,642		17,615
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, OTTI Portion, Fair Value																							0																																																										0		0		30,774		3,379		0		0		0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, OTTI Portion, Fair Value																							11,731																																																										0		0		41,817		55,060		19,976		19,976		14,642		17,615
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	2,126		98,295		2,126		98,295		156,172								1		0		245		2,524	[7]	488		45,302		38,985		0		188		207		1,443		110,357		56,345		957		108,892		54,813		0		60,149		39,481		951		40,211		12,604		6		8,532		2,728								486	[8]	1,465	[9]	1,532	[7]	486	[8]	0	[8]	0	[8]	756	[9]	1,236	[7]	486	[8]	486	[8]	709	[9]	296	[7]		0		13		28		195		67		205
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	52,559		712		52,559		712		1,877								0		585		818		0	[7]	19,277		82		0		168		0		0		32,490		977		712		32,490		0		0		15,847		0		0		13,052		0		0		3,591		0		0								0	[8]	977	[9]	712	[7]	0	[8]	0	[8]	0	[8]	977	[9]	437	[7]	0	[8]	0	[8]	0	[9]	275	[7]		0		0		0		39		0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	54,685		99,007		54,685		99,007		158,049								1		585		1,063		2,524	[7]	19,765		45,384		38,985		168		188		207		33,933		111,334		57,057		33,447		108,892		54,813		15,847		60,149		39,481		14,003		40,211		12,604		3,597		8,532		2,728								486	[8]	2,442	[9]	2,244	[7]	486	[8]	0	[8]	0	[8]	1,733	[9]	1,673	[7]	486	[8]	486	[8]	709	[9]	571	[7]		0		13		28		234		67		205
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses																							654																																																										0		0		756		1,236		486		486		709		296
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, OTTI Portion, Aggregate Losses																							0																																																										0		0		977		437		0		0		0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, OTTI Portion, Aggregate Losses																							654																																																										0		0		1,733		1,673		486		486		709		296
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized In Earnings, Net Qualitative Disclosures, Lowest Current Credit Rating [Abstract]
Available-for-sale Securities, Portfolio Concentration US Govt or GSE Securities Not Rated, Amortized Cost	9,304,737	[10]			9,304,737	[10]							1,023	[10]					0	[10]					2,129,521	[10]					0	[10]					7,174,193	[10]					7,174,193	[10]					4,297,579	[10]					2,055,924	[10]					815,201	[10]					5,489	[10]					0	[10]					0	[10]	0	[10]	0	[10]					0	[10]	0	[10]						0	[10]					0	[10]
Available-for-sale Securities, Portfolio Concentration US Govt or GSE Securities Not Rated, Fair Value	9,375,823	[10]			9,375,823	[10]							1,024	[10]					0	[10]					2,115,295	[10]					0	[10]					7,259,504	[10]					7,259,504	[10]					4,364,168	[10]					2,068,940	[10]					820,454	[10]					5,942	[10]					0	[10]					0	[10]	0	[10]	0	[10]					0	[10]	0	[10]						0	[10]					0	[10]
Available-for-sale securities, Portfolio Concentration Rated AAA To AA, Amortized Cost	45,371				45,371								0						40,967						0						4,400						0						0						0						0						0						0						0						0		0		0						0		0							0						4
Available-for-sale Securities, Portfolio Concentration Rated AAA To AA, Fair Value	47,096				47,096								0						42,360						0						4,231						0						0						0						0						0						0						0						0		0		0						0		0							0						505
Available-for-sale Securities, Portfolio Concentration Rated A To BBB, Amortized Cost	53,012				53,012								0						11,505						0						30,101						0						0						0						0						0						0						0						0		0		0						0		0							11,406						0
Available-for-sale Securities, Portfolio Concentration Rated A To BBB, Fair Value	54,110				54,110								0						11,225						0						30,297						0						0						0						0						0						0						0						0		0		0						0		0							12,588						0
Available-for-sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost	179,584				179,584								0						0						0						0						168,819						0						0						0						0						0						168,819						168,819		70,880		70,880						97,939		97,939							10,765						0
Available-for-sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value	191,184				191,184								0						0						0						0						179,042						0						0						0						0						0						179,042						179,042		75,700		75,700						103,342		103,342							12,142						0
Available-for-sale Securities, Portfolio Concentration Not Rated, Amortized Cost	30,962				30,962								0						11,459						0						0						0						0						0						0						0						0						0						0		0		0						0		0							0						19,503
Available-for-sale Securities, Portfolio Concentration Not Rated, Fair Value	30,933				30,933								0						11,385						0						0						0						0						0						0						0						0						0						0		0		0						0		0							0						19,548
Other Than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Assumptions Used to Develop Projected Cash Flows [Abstract]
Unemployment rate																																																																									Held constant at 6.7% over the next 12 months and remains at 6.7% thereafter.		Increasing to 7.3% over the next 12 months and remain at 7.3% thereafter.		Increasing to 8% over the next 12 months and remain at 8% thereafter.
Housing price appreciation/depreciation																																																																									Starting with current depreciated housing prices based on information derived from the FHFA1, appreciating 4% over the next 12 months, then flat for the following 12 months and then appreciating at 2% per year thereafter.	[11]	Starting with current depreciated housing prices based on information derived from the FHFA1, appreciating 4% over the next 12 months, then flat for the following 12 months and then appreciating at 2% per year thereafter.	[11]	Starting with current depreciated housing prices based on information derived from the FHFA1, appreciating 5% over the next 12 months, then flat for he following 12 months and then appreciating at 2% per year thereafter.	[11]
Estimated liquidation costs																																																																									Reflect actual historical liquidations costs observed on Jumbo and Alt-A residential mortgage loans in securities owned by the Company.		Reflect actual historical liquidations costs observed on Jumbo and Alt-A residential mortgage loans in securities owned by the Company.		Reflect actual historical liquidations costs observed on Jumbo and Alt-A residential mortgage loans in securities owned by the Company.
Discount rates																																																																									Estimated cash flows were discounted at rates that range from 2.00% to 6.25% based on our current expected yields.		Estimated cash flows were discounted at rates that range from 2.00% to 6.25% based on our current expected yields.		Estimated cash flows were discounted at rates that range from 2.00% to 6.25% based on our current expected yields.
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net Qualitative Disclosures, Privately Issued Mortgage-backed Securities [Abstract]
Available-for-sale Securities, Privately Issued Residential Mortgage-backed Securities, Number of Securities																																																																									44						44		14		14						30		30
Available-for-sale Securities, Privately Issued Residential Mortgage-backed Securities, Credit losses Recognized [Abstract]
Available-for-sale Securities, Privately Issued Residential Mortgage-backed Securities, Number of Securities with Credit Losses In Current Period																																																																									0						43		0		14						0		29
Amount of Credit Losses Recognized in Current Period																																																																									$ 0						$ 54,347		$ 0		$ 36,127						$ 0		$ 18,220

[1] Gross unrealized gain/loss recognized in AOCI in the consolidated balance sheet.

[2] Amounts represent unrealized loss that remains in AOCI after an other-than-temporary credit loss has been recognized in income.

[3] Calculated on a taxable equivalent basis using a 39% effective tax rate.

[4] Nominal yield on municipal and other tax-exempt securities and other debt securities with contractual maturity dates over ten years are based on variable rates which generally are reset within 35 days.

[5] The nominal yield on mortgage-backed securities is based upon prepayment assumptions at the purchase date. Actual yields earned may differ significantly based upon actual prepayments. See Quarterly Financial Summary –– Unaudited following for current yields on available for sale securities portfolio.

[6] Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalty.

[7] Includes the following securities for which an unrealized loss remains in AOCI after an other-than-temporary credit loss has been recognized in income:Municipal and other tax-exempt 21 $11,731 $654 $— $— $11,731 $654Alt-A loans 10 51,681 1,236 3,379 437 55,060 1,673Jumbo-A loans 2 17,615 296 — — 17,615 296

[8] Includes the following securities for which an unrealized loss remains in AOCI after an other-than-temporary credit loss has been recognized in income:Alt-A loans — — — — — — —Jumbo-A loans 11 19,976 486 — — 19,976 486

[9] Includes the following securities for which an unrealized loss remains in AOCI after an other-than-temporary credit loss has been recognized in income:Alt-A loans 7 $11,043 $756 $30,774 $977 $41,817 $1,733Jumbo-A loans 9 14,642 709 — — 14,642 709

[10] U.S. government and government sponsored enterprises are not rated by the nationally-recognized rating agencies as these securities are guaranteed by agencies of the U.S. government or government-sponsored enterprises.

[11] Federal Housing Finance Agency