Business Combinations, (Heritage Banking Group) (Details) (USD $)	12 Months Ended			0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Apr. 15, 2011 Heritage Banking Group Business Acquisition [Member]	Dec. 31, 2011 Heritage Banking Group Business Acquisition [Member]
Business Acquisition [Line Items]
Age of acquired entity					90 years
FDIC loss-share transaction asset coverage agreement			$ 151,900,000
FDIC loss-share agreement covered loan and other real estate losses (in hundredths)			80.00%
FDIC loss-share agreement term for single family residential mortgage loans and foreclosed real estate			P10Y
FDIC loss-share agreement term for commercial loans and related foreclosures			P5Y
FDIC loss-share agreement reimbursement term for recoveries of covered losses			P3Y
Assets [Abstract]
Cash and due from banks				50,447,000
Federal funds sold				1,000,000
Securities available for sale				6,389,000
Acquired noncovered loans				9,644,000
Acquired covered loans				97,770,000
Premises and equipment, net				55,000
Identifiable intangible assets				902,000
Covered other real estate				7,485,000
FDIC indemnification asset				33,333,000
Other assets				218,000
Total Assets	1,845,543,000	234,960,000	207,243,000	207,243,000
Liabilities [Abstract]
Deposits				204,349,000
Short-term borrowings				23,157,000
Other liabilities				730,000
Total Liabilities	1,821,066,000	209,322,000	228,236,000	228,236,000
Net assets acquired at fair value				(20,993,000)
Cash received on acquisition				28,449,000
Bargain purchase gain	0	3,635,000	7,456,000	7,456,000
Income taxes				2,852,000
Bargain purchase gain, net of taxes				$ 4,604,000