Investment Securities (Tables)

12 Months Ended

Dec. 31, 2012

Investments, Debt and Equity Securities [Abstract]

Available-for-sale Securities [Table Text Block]

The following table is the schedule of Available-For-Sale Securities at December 31, 2012 and 2011:

Available-For-Sale Securities
	U.S. Agency Obligations		State and Municipal Obligations		Mortgage- Backed Securities - Residential		Corporate and Other Debt Securities		Mutual Funds and Equity Securities		Total Available- For-Sale Securities
December 31, 2012
Available-For-Sale Securities,   at Amortized Cost	$	122,297	$	84,798	$	252,480	$	8,689	$	1,120	$	469,384
Available-For-Sale Securities,   at Fair Value	122,457		84,838		261,804		8,451		1,148		478,698
Gross Unrealized Gains	204		206		9,405		—		28		9,843
Gross Unrealized Losses	44		166		81		238		—		529
Available-For-Sale Securities,   Pledged as Collateral											260,292
Maturities of Debt Securities, at Amortized Cost:
Within One Year	—		28,231		19,180		—				47,411
From 1 - 5 Years	122,297		53,797		217,387		6,381				399,862
From 5 - 10 Years	—		1,593		15,913		1,308				18,814
Over 10 Years	—		1,177		—		1,000				2,177
Maturities of Debt Securities, at Fair Value:
Within One Year	—		28,284		19,838		—				48,122
From 1 - 5 Years	122,457		53,731		224,982		6,350				407,520
From 5 - 10 Years	—		1,646		16,984		1,301				19,931
Over 10 Years	—		1,177		—		800				1,977
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	$	72,531	$	46,627	$	10,230	$	8,451	$	—	$	137,839
12 Months or Longer	—		2,149		4,968		—		—		7,117
Total	$	72,531	$	48,776	$	15,198	$	8,451	$	—	$	144,956
Number of Securities in a   Continuous Loss Position	22		198		7		11		—		238
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$	44	$	160	$	50	$	238	$	—	$	492
12 Months or Longer	—		6		31		—		—		37
Total	$	44	$	166	$	81	$	238	$	—	$	529
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											265,854
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

Available-For-Sale Securities
	U.S. Agency Obligations		State and Municipal Obligations		Mortgage- Backed Securities - Residential		Corporate and Other Debt Securities		Mutual Funds and Equity Securities		Total Available- For-Sale Securities
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

Held-to-maturity Securities [Table Text Block]

The following table is the schedule of Held-To-Maturity Securities at December 31, 2012 and 2011:

Held-To-Maturity Securities
	State and Municipal Obligations		Mortgage- Backed Securities - Residential		Corporate and Other Debt Securities		Total Held-To Maturity Securities
December 31, 2012
Held-To-Maturity Securities,   at Amortized Cost	$	183,373	$	55,430	$	1,000	$	239,803
Held-To-Maturity Securities,   at Fair Value	191,196		56,056		1,000		248,252
Gross Unrealized Gains	7,886		626		—		8,512
Gross Unrealized Losses	63		—		—		63
Held-To-Maturity Securities,   Pledged as Collateral							238,803
Maturities of Debt Securities, at Amortized Cost:
Within One Year	32,047		—		—		32,047
From 1 - 5 Years	69,431		55,430		—		124,861
From 5 - 10 Years	76,096		—		—		76,096
Over 10 Years	5,799		—		1,000		6,799
Maturities of Debt Securities, at Fair Value:
Within One Year	32,115		—		—		32,115
From 1 - 5 Years	70,371		56,056		—		126,427
From 5 - 10 Years	82,476		—		—		82,476
Over 10 Years	6,234		—		1,000		7,234
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	$	21,583	$	—	$	—	$	21,583
12 Months or Longer	503		—		—		503
Total	$	22,086	$	—	$	—	$	22,086
Number of Securities in a   Continuous Loss Position	61		—		—		61
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$	62	$	—	$	—	$	62
12 Months or Longer	1		—		—		1
Total	$	63	$	—	$	—	$	63

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							149,688
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

Schedule of Cost Method Investments [Table Text Block]

Schedule of Federal Reserve Bank and Federal Home Loan Bank Stock

	December 31,
	2012		2011
Federal Reserve Bank Stock	$	1,018	$	1,031
Federal Home Loan Bank Stock	4,774		5,691
Total Federal Reserve Bank and Federal Home Loan Bank Stock	$	5,792	$	6,722