Portfolio Loans Covered by Loss Share ("Covered") - Summary of Covered Loans by Category (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Covered Loans [Line Items]
Loans Purchased From FDIC Outstanding Balance	$ 201,700,000	$ 301,200,000
Net cash proceeds received from FDIC loss share receivable	10,981,000	91,641,000	41,415,000
Covered Loans
Covered Loans [Line Items]
Recorded Investment Covered Loans	140,538,000	201,118,000
Covered Loans | Real Estate Loans
Covered Loans [Line Items]
Recorded Investment Covered Loans	129,494,000	177,810,000
Covered Loans | Commercial and industrial
Covered Loans [Line Items]
Weighted-Average Risk Rating	6.87	6.57
Recorded Investment Covered Loans	9,271,000	22,034,000
Covered Loans | Consumer & other
Covered Loans [Line Items]
Weighted-Average Risk Rating	6.47	4.19
Recorded Investment Covered Loans	1,773,000	1,274,000
Covered Loans | Construction and Land Development
Covered Loans [Line Items]
Weighted-Average Risk Rating	6.84	7.06
Recorded Investment Covered Loans	14,325,000	30,537,000
Covered Loans | Commercial - Investor Owned
Covered Loans [Line Items]
Weighted-Average Risk Rating	6.81	6.08
Recorded Investment Covered Loans	48,146,000	57,602,000
Covered Loans | Commercial - Owner Occupied
Covered Loans [Line Items]
Weighted-Average Risk Rating	6.75	6.65
Recorded Investment Covered Loans	32,525,000	47,140,000
Covered Loans | Residential
Covered Loans [Line Items]
Weighted-Average Risk Rating	5.92	5.68
Recorded Investment Covered Loans	$ 34,498,000	$ 42,531,000