Loans and Allowance for Loan Losses (Impaired Loans) (Details) (USD $)	9 Months Ended		12 Months Ended
	Sep. 30, 2014		Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
Impaired loans, no individually reviewed for impairment	$ 4,741,000		$ 4,612,000
Impaired loans, individually reviewed, with no impairment	29,582,000		39,865,000
Impaired loans, individually reviewed, with impairment	7,811,000		2,965,000
Total impaired loans, excluding purchased impaired	42,134,000	[1]	47,442,000	[1]
Purchased impaired loans with subsequent deterioration	111,541,000		161,307,000
Purchased impaired loans with no subsequent deterioration	19,124,000		345,000
Impaired loan, individually reviewed, with impairment, associated reserves	442,000	[1]	927,000	[1]
Purchased impaired loans with subsequent deterioration, associated reserves	3,923,000		5,560,000
Impaired financing receivable, including deteriorated loans purchased, related allowance	4,365,000		6,487,000
Impaired financing receivable, simple average balance	44,788,000		65,527,000
Restructured loans	19,900,000		18,100,000
Performing [Member]
Financing Receivable, Impaired [Line Items]
Restructured loans	$ 14,200,000		$ 12,100,000

[1] * Included at September 30, 2014 and December 31, 2013 were $13.8 million and $12.1 million, respectively, in restructured and performing loans.