Mergers and Acquisition-Purchase Price Adjustment (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended			0 Months Ended			0 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 01, 2013 First M&F Merger	Sep. 01, 2013 First M&F Merger		Sep. 01, 2013 Deposits First M&F Merger	Sep. 01, 2013 Junior Subordinated Debt First M&F Merger	Sep. 01, 2013 Other liabilities First M&F Merger	Sep. 01, 2013 Deferred income taxes First M&F Merger	Sep. 01, 2013 Securities First M&F Merger	Sep. 01, 2013 Loans, net of First M&F's allowance for loan losses First M&F Merger		Sep. 01, 2013 Fixed assets First M&F Merger	Sep. 01, 2013 Core deposits intangible, net of First M&F’s existing core deposit intangible First M&F Merger	Sep. 01, 2013 Other real estate owned First M&F Merger		Sep. 01, 2013 Other assets First M&F Merger
Business Acquisition [Line Items]
Shares issued to common shareholders (shares)						6,175,576
Purchase price per share (usd per share)							$ 25.17
Value of stock paid						$ 155,439
Cash paid for fractional shares						17
Fair value of stock based compensation assumed						68
Deal charges	0	3,763	195	4,148		1,321
Total Purchase Price						156,845
Stockholders’ equity at 9/1/13							79,440
Fair value adjustment of assets													253	(45,761)	[1]	(3,254)	21,158	(5,797)	[1]	(443)
Fair value adjustment of liabilities									(3,207)	12,371	1,748	10,210
Total Net Assets Acquired							66,718
Goodwill resulting from merger	$ 274,658	$ 275,328	$ 274,658	$ 275,328	$ 276,100		$ 90,127	[2]

[1] The fair value adjustments to acquired loans and other real estate owned reflect management’s expectations to more aggressively market and liquidate problem assets quickly.

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