Investment Securities (Tables)

6 Months Ended

Jun. 30, 2012

Investments, Debt and Equity Securities [Abstract]

Available-for-sale Securities [Table Text Block]

Available-For-Sale Securities
	U.S. Agency Obligations		State and Municipal Obligations		Mortgage- Backed Securities - Residential		Corporate and Other Debt Securities		Mututal Funds and Equity Securities		Total Available- For-Sale Securities
June 30, 2012
Available-For-Sale Securities,   at Amortized Cost	$	48,300	$	54,746	$	314,394	$	1,001	$	1,364	$	419,805
Available-For-Sale Securities,   at Fair Value	48,655		55,013		325,076		801		1,465		431,010
Gross Unrealized Gains	355		284		10,863		—		107		11,609
Gross Unrealized Losses	—		17		181		200		6		404
Available-For-Sale Securities,   Pledged as Collateral											183,631
Maturities of Debt Securities, at Amortized Cost:
Within One Year	24,290		14,009		14,474		—				52,773
From 1 - 5 Years	24,010		37,707		271,696		1				333,414
From 5 - 10 Years	—		1,344		28,224		—				29,568
Over 10 Years	—		1,686		—		1,000				2,686
Maturities of Debt Securities, at Fair Value:
Within One Year	24,320		14,051		14,706		—				53,077
From 1 - 5 Years	24,335		37,881		280,416		1				342,633
From 5 - 10 Years	—		1,395		29,954		—				31,349
Over 10 Years	—		1,686		—		800				2,486
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	$	—	$	8,637	$	23,477	$	800	$	—	$	32,914
12 Months or Longer	—		—		—		—		39		39
Total	$	—	$	8,637	$	23,477	$	800	$	39	$	32,953
Number of Securities in a   Continuous Loss Position	—		29		9		1		1		40
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$	—	$	17	$	181	$	200	$	—	$	398
12 Months or Longer	—		—		—		—		6		6
Total	$	—	$	17	$	181	$	200	$	6	$	404

Available-For-Sale Securities
	U.S. Agency Obligations		State and Municipal Obligations		Mortgage- Backed Securities - Residential		Corporate and Other Debt Securities		Mututal Funds and Equity Securities		Total Available- For-Sale Securities
December 31, 2011
Available-For-Sale Securities,   at Amortized Cost	$	116,055	$	44,712	$	382,118	$	1,015	$	1,365	$	545,265
Available-For-Sale Securities,   at Fair Value	116,393		44,999		392,712		1,015		1,419		556,538
Gross Unrealized Gains	342		305		10,813		—		69		11,529
Gross Unrealized Losses	4		18		219		—		15		256
Available-For-Sale Securities,   Pledged as Collateral											264,854
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	$	25,956	$	4,505	$	9,857	$	—	$	—	$	40,318
12 Months or Longer	—		—		5,715		—		78		5,793
Total	$	25,956	$	4,505	$	15,572	$	—	$	78	$	46,111
Number of Securities in a   Continuous Loss Position	7		12		5		—		2		26
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$	4	$	18	$	204	$	—	$	—	$	226
12 Months or Longer	—		—		15		—		15		30
Total	$	4	$	18	$	219	$	—	$	15	$	256
June 30, 2011
Available-For-Sale Securities,   at Amortized Cost	$	49,312	$	90,451	$	357,194	$	1,357	$	1,314	$	499,628
Available-For-Sale Securities,   at Fair Value	49,551		90,700		368,029		1,345		1,469		511,094
Gross Unrealized Gains	239		251		11,126		—		165		11,781
Gross Unrealized Losses	—		2		291		12		10		315
Available-For-Sale Securities,   Pledged as Collateral											233,074
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	$	—	$	3,359	$	65,391	$	—	$	28	$	68,778
12 Months or Longer	—		—		146		317		46		509
Total	$	—	$	3,359	$	65,537	$	317	$	74	$	69,287
Number of Securities in a   Continuous Loss Position	—		3		24		1		2		30
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$	—	$	2	$	291	$	—	$	8	$	301
12 Months or Longer	—		—		—		12		2		14
Total	$	—	$	2	$	291	$	12	$	10	$	315

Held-to-maturity Securities [Table Text Block]

Held-To-Maturity Securities
	State and Municipal Obligations		Mortgage- Backed Securities - Residential		Corporate and Other Debt Securities		Total Held-To Maturity Securities
June 30, 2012
Held-To-Maturity Securities,   at Amortized Cost	$	183,277	$	68,625	$	1,000	$	252,902
Held-To-Maturity Securities,   at Fair Value	191,297		69,277		1,000		261,574
Gross Unrealized Gains	8,055		652		—		8,707
Gross Unrealized Losses	35		—		—		35
Held-To-Maturity Securities,   Pledged as Collateral							252,902
Maturities of Debt Securities, at Amortized Cost:
Within One Year	35,450		—		—		35,450
From 1 - 5 Years	83,611		68,625		—		152,236
From 5 - 10 Years	59,047		—		—		59,047
Over 10 Years	5,169		—		1,000		6,169
Maturities of Debt Securities, at Fair Value:
Within One Year	35,563		—		—		35,563
From 1 - 5 Years	85,763		69,277		—		155,040
From 5 - 10 Years	64,429		—		—		64,429
Over 10 Years	5,542		—		1,000		6,542
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	$	14,908	$	—	$	—	$	14,908
12 Months or Longer	—		—		—		—
Total	$	14,908	$	—	$	—	$	14,908
Number of Securities in a   Continuous Loss Position	34		—		—		34
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$	35	$	—	$	—	$	35
12 Months or Longer	—		—		—		—
Total	$	35	$	—	$	—	$	35

Held-To-Maturity Securities
	State and Municipal Obligations		Mortgage- Backed Securities - Residential		Corporate and Other Debt Securities		Total Held-To Maturity Securities
December 31, 2011
Held-To-Maturity Securities,   at Amortized Cost	$	149,688	$	—	$	1,000	$	150,688
Held-To-Maturity Securities,   at Fair Value	158,059		—		1,000		159,059
Gross Unrealized Gains	8,378		—		—		8,378
Gross Unrealized Losses	7		—		—		7
Held-To-Maturity Securities,   Pledged as Collateral							150,688
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	$	510	$	—	$	—	$	510
12 Months or Longer	—		—		—		—
Total	$	510	$	—	$	—	$	510
Number of Securities in a   Continuous Loss Position	1		—		—		1
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$	7	$	—	$	—	$	7
12 Months or Longer	—		—		—		—
Total	$	7	$	—	$	—	$	7
June 30, 2011
Held-To-Maturity Securities,   at Amortized Cost	$	137,334	$	—	$	1,000	$	138,334
Held-To-Maturity Securities,   at Fair Value	142,327		—		1,000		143,327
Gross Unrealized Gains	5,008		—		—		5,008
Gross Unrealized Losses	15		—		—		15
Held-To-Maturity Securities,   Pledged as Collateral							138,334
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	$	—	$	—	$	—	$	—
12 Months or Longer	1,561		—		—		1,561
Total	$	1,561	$	—	$	—	$	1,561
Number of Securities in a   Continuous Loss Position	5		—		—		5
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$	—	$	—	$	—	$	—
12 Months or Longer	15		—		—		15
Total	$	15	$	—	$	—	$	15

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