Loans and Leases - Troubled Debt Restructuring (Details)	9 Months Ended
	Sep. 30, 2014 USD ($) contract	Sep. 30, 2015 USD ($) loan	Dec. 31, 2014 USD ($) loan
Financing Receivable, Modifications [Line Items]
Number of loans | loan		9,000	12
Total TDRs		$ 5,925,000	$ 8,759,000
Financing Receivable New Modifications for the Period [Abstract]
Number of loans | contract	3
Term	$ 233,000
Combination of types	28,000
Total	261,000
Pre-Modification Outstanding Recorded Investment	262,000
Post-Modification Outstanding Recorded Investment	$ 262,000
Mortgage Loans in Process of Foreclosure, Amount		228,000
Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs		5,540,000	6,573,000
Non Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs		$ 385,000	$ 2,186,000
Commercial real estate [Member]
Financing Receivable, Modifications [Line Items]
Number of loans | loan		3,000	3
Total TDRs		$ 2,818,000	$ 2,883,000
Commercial real estate [Member] | Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs		$ 2,818,000	$ 2,883,000
Construction and land development [Member]
Financing Receivable, Modifications [Line Items]
Number of loans | loan		1,000	3
Total TDRs		$ 95,000	$ 683,000
Construction and land development [Member] | Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs			47,000
Construction and land development [Member] | Non Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs		$ 95,000	$ 636,000
Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of loans | loan		4,000	5
Total TDRs		$ 2,722,000	$ 5,091,000
Financing Receivable New Modifications for the Period [Abstract]
Number of loans | contract	3
Term	$ 233,000
Combination of types	28,000
Total	261,000
Pre-Modification Outstanding Recorded Investment	262,000
Post-Modification Outstanding Recorded Investment	$ 262,000
Commercial and industrial [Member] | Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs		$ 2,722,000	3,643,000
Commercial and industrial [Member] | Non Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs			$ 1,448,000
Residential real estate [Member]
Financing Receivable, Modifications [Line Items]
Number of loans | loan		1,000	1
Total TDRs		$ 290,000	$ 102,000
Residential real estate [Member] | Non Accrual Status [Member]
Financing Receivable, Modifications [Line Items]
Total TDRs		$ 290,000	$ 102,000