Loans and Leases - Concessions Granted on Accruing and Nonaccrual Loans Restructured (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($) loan	Jun. 30, 2015 USD ($) loan	Jun. 30, 2016 USD ($) loan	Jun. 30, 2015 USD ($) loan
Accrual Troubled Debt Restructuring Loans [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	1	3	2	5
Amount | $	$ 415	$ 1,352	$ 1,960	$ 1,848
Accrual Troubled Debt Restructuring Loans [Member] | Interest Only Terms Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	1	0	1	0
Amount | $	$ 415	$ 0	$ 415	$ 0
Accrual Troubled Debt Restructuring Loans [Member] | Temporary Payment Reduction [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	0	0	0	2
Amount | $	$ 0	$ 0	$ 0	$ 496
Accrual Troubled Debt Restructuring Loans [Member] | Extended Maturity [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	0	1	0	1
Amount | $	$ 0	$ 500	$ 0	$ 500
Accrual Troubled Debt Restructuring Loans [Member] | Amortization Period Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	0	2	1	2
Amount | $	$ 0	$ 852	$ 1,545	$ 852
Nonaccrual Troubled Debt Restructuring Loans [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	0	0	0	1
Amount | $	$ 0	$ 0	$ 0	$ 122
Nonaccrual Troubled Debt Restructuring Loans [Member] | Interest Only Terms Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	0	0	0	0
Amount | $	$ 0	$ 0	$ 0	$ 0
Nonaccrual Troubled Debt Restructuring Loans [Member] | Temporary Payment Reduction [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	0	0	0	1
Amount | $	$ 0	$ 0	$ 0	$ 122
Nonaccrual Troubled Debt Restructuring Loans [Member] | Extended Maturity [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	0	0	0	0
Amount | $	$ 0	$ 0	$ 0	$ 0
Nonaccrual Troubled Debt Restructuring Loans [Member] | Amortization Period Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	0	0	0	0
Amount | $	$ 0	$ 0	$ 0	$ 0
Real Estate-Commercial [Member] | Accrual Troubled Debt Restructuring Loans [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	0	1	0	1
Amount | $		$ 405		$ 405
Real Estate-Commercial [Member] | Accrual Troubled Debt Restructuring Loans [Member] | Interest Only Terms Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan		0		0
Amount | $		$ 0		$ 0
Real Estate-Commercial [Member] | Accrual Troubled Debt Restructuring Loans [Member] | Temporary Payment Reduction [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan		0		0
Amount | $		$ 0		$ 0
Real Estate-Commercial [Member] | Accrual Troubled Debt Restructuring Loans [Member] | Extended Maturity [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan		0		0
Amount | $		$ 0		$ 0
Real Estate-Commercial [Member] | Accrual Troubled Debt Restructuring Loans [Member] | Amortization Period Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan		1		1
Amount | $		$ 405		$ 405
Commercial, Financial and Agricultural [Member] | Accrual Troubled Debt Restructuring Loans [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	0	2	1	3
Amount | $		$ 947	$ 1,545	$ 1,090
Commercial, Financial and Agricultural [Member] | Accrual Troubled Debt Restructuring Loans [Member] | Interest Only Terms Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan		0	0	0
Amount | $		$ 0	$ 0	$ 0
Commercial, Financial and Agricultural [Member] | Accrual Troubled Debt Restructuring Loans [Member] | Temporary Payment Reduction [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan		0	0	1
Amount | $		$ 0	$ 0	$ 143
Commercial, Financial and Agricultural [Member] | Accrual Troubled Debt Restructuring Loans [Member] | Extended Maturity [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan		1	0	1
Amount | $		$ 500	$ 0	$ 500
Commercial, Financial and Agricultural [Member] | Accrual Troubled Debt Restructuring Loans [Member] | Amortization Period Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan		1	1	1
Amount | $		$ 447	$ 1,545	$ 447
Commercial, Financial and Agricultural [Member] | Nonaccrual Troubled Debt Restructuring Loans [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan			0	1
Amount | $				$ 122
Commercial, Financial and Agricultural [Member] | Nonaccrual Troubled Debt Restructuring Loans [Member] | Interest Only Terms Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan				0
Amount | $				$ 0
Commercial, Financial and Agricultural [Member] | Nonaccrual Troubled Debt Restructuring Loans [Member] | Temporary Payment Reduction [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan				1
Amount | $				$ 122
Commercial, Financial and Agricultural [Member] | Nonaccrual Troubled Debt Restructuring Loans [Member] | Extended Maturity [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan				0
Amount | $				$ 0
Commercial, Financial and Agricultural [Member] | Nonaccrual Troubled Debt Restructuring Loans [Member] | Amortization Period Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan				0
Amount | $				$ 0
Real Estate-Residential Secured for Business Purpose [Member] | Amortization Period Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	0
Amount | $	$ 0
Real Estate-Residential Secured for Business Purpose [Member] | Accrual Troubled Debt Restructuring Loans [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	1	0	1	1
Amount | $	$ 415		$ 415	$ 353
Real Estate-Residential Secured for Business Purpose [Member] | Accrual Troubled Debt Restructuring Loans [Member] | Interest Only Terms Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	1		1	0
Amount | $	$ 415		$ 415	$ 0
Real Estate-Residential Secured for Business Purpose [Member] | Accrual Troubled Debt Restructuring Loans [Member] | Temporary Payment Reduction [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	0		0	1
Amount | $	$ 0		$ 0	$ 353
Real Estate-Residential Secured for Business Purpose [Member] | Accrual Troubled Debt Restructuring Loans [Member] | Extended Maturity [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan	0		0	0
Amount | $	$ 0		$ 0	$ 0
Real Estate-Residential Secured for Business Purpose [Member] | Accrual Troubled Debt Restructuring Loans [Member] | Amortization Period Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of Loans | loan			0	0
Amount | $			$ 0	$ 0