Acquisition And Divestiture Activity (Narrative) (Details) (USD $) Share data in Millions, unless otherwise specified	1 Months Ended		12 Months Ended		12 Months Ended		0 Months Ended		1 Months Ended				0 Months Ended	12 Months Ended		12 Months Ended					12 Months Ended			1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended
	Dec. 31, 2011 store	Jul. 31, 2011 D	Dec. 31, 2012	May 31, 2011	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2012 Maximum [Member]	Sep. 15, 2012 Indiana Community Bancorp [Member] store	Dec. 31, 2012 Indiana Community Bancorp [Member]	Dec. 31, 2011 Integra Bank N.A [Member]	Jul. 31, 2011 Integra Bank N.A [Member] store	May 31, 2011 Integra Bank N.A [Member]	Dec. 31, 2012 Integra Bank N.A [Member]	Jan. 02, 2011 Monroe Bancorp [Member]	Dec. 31, 2011 Monroe Bancorp [Member] store	Dec. 31, 2012 Monroe Bancorp [Member]	Dec. 31, 2012 Bank Of America [Member]	Dec. 31, 2013 Bank Of America [Member] store	Dec. 31, 2012 Core Deposit Intangible [Member] Indiana Community Bancorp [Member]	Dec. 31, 2012 Core Deposit Intangible [Member] Monroe Bancorp [Member]	Dec. 31, 2012 Customer Trust Relationships [Member] Indiana Community Bancorp [Member]	Dec. 31, 2012 Customer Trust Relationships [Member] Integra Bank N.A [Member]	May 31, 2011 Customer Trust Relationships [Member] Integra Bank N.A [Member]	Dec. 31, 2012 Customer Trust Relationships [Member] Monroe Bancorp [Member]	Jul. 31, 2011 Losses Up To $275.0 [Member]	Dec. 31, 2012 Losses Up To $275.0 [Member]	Jul. 31, 2011 Losses In Excess Of $275.0 Up To $467.2 [Member]	Dec. 31, 2012 Losses In Excess Of $275.0 Up To $467.2 [Member]	Dec. 31, 2012 Losses In Excess Of $467.2 [Member]
Business acquisition, effective date of acquisition										Jul. 29, 2011
Percentage of interest acquired							100.00%							100.00%
Number of branch locations	4						17			52				15			24
Number of shares issued in acquisition							6.6						7.6	7.6
Value of shares issued in acquisition							$ 88,500,000						$ 90,100,000	$ 90,100,000
Net tangible assets acquired								(170,000)						11,200,000	11,156,000
Definite-lived intangible assets acquired								3,024,000						10,500,000	10,485,000			1,300,000	8,200,000	1,700,000		1,300,000	2,300,000
Maximum number of days to cover future losses of accrued interest on loans		90
Loss sharing reimbursement threshold																								80.00%	80.00%
Loss amount covered at 80% up to $275 million																								275,000,000	275,000,000			467,200,000
F D I C Loss Sharing Agreements Amount, Zero Percentage																										467,200,000	467,200,000
Zero percent for losses on acquisition																										467,200,000	467,200,000
Number of years for loss sharing provisions for commercial mortgage loans			5 years
Number of years for loss sharing provisions for single family residential mortgage loans			10 years
Number of years for loss recovery provisions for commercial mortgage loans			8 years
Number of years for loss recovery provisions for single family residential mortgage loans			10 years
Goodwill acquired		16,900,000						85,643,000				16,864,000			68,429,000
Core deposit intangible, net		4,300,000
Goodwill deductible for income tax purposes		29,000,000
Purchase price of acquired entity								88,497,000		170,800,000					90,070,000
Assets under management				4,400,000,000							328,000,000
Cash transaction payments											1,300,000
Acquisition-related costs											126,000
Estimated useful life of intangible assets					5 years	15 years															12 years
Assets acquired												1,827,350,000
80% reimbursement for loss on acquisition																									80			80
Loss amount covered at 80% up to $467.2 million																									80			80
Percentage covered up to $467.2 million			0.00%																								0.00%
Loss sharing agreements amount, 80% on assets acquired																								275,000,000	275,000,000			467,200,000
Percentage covered in excess of $467.2 million																												80.00%
Deposits sold									106,900,000
Net gain on sale of deposit	500,000
Deposit premium	400,000.00															2.94
Time deposits related to divestiture	800,000
Accelerated amortization associated with core deposit intangible	700,000
Deposits held for sale			150,000,000
Number of banking center to be consolidated			19
Gain on sale of banking centers			1,400,000
Deposits to be included in transaction																778,800,000
Loan balances to be included in transaction																$ 7,700,000