Securities - Securities Sold (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Debt Securities, Available-for-sale [Line Items]
Carrying Value	$ 199,532	$ 2,403	$ 212,137	$ 2,403
Net Proceeds	199,875	2,387	212,485	2,387
Gain/(Loss)	343	(16)	348	(16)
Obligations of states and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Carrying Value	1,112	901	11,799	901
Net Proceeds	1,111	894	11,813	894
Gain/(Loss)	(1)	(7)	14	(7)
Residential mortgage backed securities | Government agency mortgage backed securities
Debt Securities, Available-for-sale [Line Items]
Carrying Value	70,926	943	72,556	943
Net Proceeds	70,322	941	71,944	941
Gain/(Loss)	(604)	(2)	(612)	(2)
Residential mortgage backed securities | Government agency collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Carrying Value	122,404	559	122,692	559
Net Proceeds	120,606	552	120,892	552
Gain/(Loss)	(1,798)	$ (7)	(1,800)	$ (7)
Commercial mortgage-backed securities | Government agency collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Carrying Value	4,838		4,838
Net Proceeds	4,720		4,720
Gain/(Loss)	(118)		(118)
Other debt securities
Debt Securities, Available-for-sale [Line Items]
Carrying Value	252		252
Net Proceeds	257		257
Gain/(Loss)	5		5
Other equity securities
Debt Securities, Available-for-sale [Line Items]
Carrying Value	0		0
Net Proceeds	2,859		2,859
Gain/(Loss)	$ 2,859		$ 2,859