Acquisitions (Narrative) (Details) (USD $)				3 Months Ended		3 Months Ended		3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Jan. 02, 2013 Commercial Insurance Agency Office in Pikeville, Kentucky [Member]	Mar. 31, 2013 Gross Core Deposit [Member]	Dec. 31, 2012 Gross Core Deposit [Member]	Mar. 31, 2013 Gross Customer Relationship [Member]	Dec. 31, 2012 Gross Customer Relationship [Member]	Mar. 31, 2013 Goodwill [Member]	Dec. 31, 2012 Goodwill [Member]	Mar. 31, 2013 Customer Relationships [Member]	Mar. 31, 2013 Other Intangible Assets [Member]	Mar. 31, 2013 Servicing Contracts [Member]	Mar. 31, 2013 Core Deposits [Member]
Business Acquisition [Line Items]
Goodwill	$ 65,401,000	$ 64,881,000						$ 65,401,000	$ 64,881,000
Cash consideration			1,500,000
Finite-Lived Intangible Assets, Gross				8,853,000	8,853,000	8,193,000	7,190,000			8,193,000	17,046,000		8,853,000
Goodwill, Acquired During Period								520,000
Finite-lived Intangible Assets Acquired				0		1,003,000
Finite-Lived Intangible Assets, Accumulated Amortization										(6,391,000)	(14,660,000)		(8,269,000)
Other intangible assets	$ 4,576,000	$ 3,644,000								$ 1,802,000	$ 2,386,000	$ 2,190,000	$ 584,000