Loans and Allowance for Loan Losses (Impaired Loans) (Details) (USD $)	3 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2013		Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Impaired loans, no individually reviewed for impairment		$ 4,612,000		$ 6,017,000
Impaired loans, individually reviewed, with no impairment		39,865,000		62,282,000
Impaired loans, individually reviewed, with impairment		2,965,000		15,312,000
Total impaired loans, excluding purchased impaired		47,442,000	[1]	83,611,000	[1]
Purchased impaired loans with subsequent deterioration		161,307,000		192,115,000
Purchased impaired loans with no subsequent deterioration		344,000		36,277,000
Impaired loan, individually reviewed, with impairment, associated reserves		927,000	[1]	1,737,000	[1]
Purchased impaired loans with subsequent deterioration, associated reserves		5,560,000		5,373,000
Impaired financing receivable, including deteriorated loans purchased, related allowance		6,487,000		7,110,000
Imparied financing receivable, simple average balance	65,527,000	94,754,000
Restructured loans		18,100,000		20,800,000
Performing [Member]
Financing Receivable, Impaired [Line Items]
Restructured loans		$ 12,100,000		$ 4,500,000

[1] * Included at December 31, 2013 and December 31, 2012 were $12.1 million and $4.5 million, respectively, in restructured and performing loans.