Mergers and Acquisition (Details) (USD $)	6 Months Ended			0 Months Ended			0 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Sep. 01, 2013 First M&F Merger		Sep. 01, 2013 First M&F Merger First M&F Branches	Sep. 01, 2013 First M&F Merger Common Stock	Sep. 01, 2013 Core Deposits First M&F Merger	Sep. 01, 2013 Junior Subordinated Debt First M&F Merger	Sep. 01, 2013 LIBOR Junior Subordinated Debt First M&F Merger
Business Acquisition [Line Items]
Number of banking and insurance locations the entity operates (branches)						43
Shares issued to common shareholders (shares)				6,175,576			6,175,576
Voting interest acquired (percent)						100.00%
Total Purchase Price				$ 156,845,000
Intangible assets, including goodwill				116,500,000
Goodwill resulting from merger	276,146,000	276,100,000	184,779,000	91,512,000	[1]
Intangible assets, other than goodwill								25,033,000
Weighted average useful life								10 years
Borrowings				25,346,000					30,900,000
Variable interest rate of derivatives, description	the three-month LIBOR plus a pre-determined spread								90-day LIBOR
Basis spread on variable rate (percent)										1.33%
Fair value adjustment									$ 12,371,000

[1] The goodwill resulting from the merger has been assigned to the Community Banks operating segment.