Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Amortized intangible assets [Abstract]
Gross carrying value	[1]	$ 3,674		$ 3,636
Accumulated amortization	[1]	(2,127)		(2,013)
Net carrying value	[1]	1,547		1,623
Unamortized intangible assets [Abstract]
Goodwill		23,296		23,296
Actual and Estimated Future Amortization Expense [Abstract]
Amortization expense		114	$ 126
Estimated Amortization Expense [Abstract]
Remaining 2019		331
2020		347
2021		282
2022		221
2023		164
MSRs [Member]
Amortized intangible assets [Abstract]
Gross carrying value	[1]	1,763		1,725
Accumulated amortization	[1]	(1,114)		(1,066)
Net carrying value	[1]	649		659
Actual and Estimated Future Amortization Expense [Abstract]
Amortization expense		48	49
Estimated Amortization Expense [Abstract]
Remaining 2019		138
2020		150
2021		117
2022		88
2023		64
Core Deposit Intangibles [Member]
Amortized intangible assets [Abstract]
Gross carrying value	[1]	1,786		1,786
Accumulated amortization	[1]	(909)		(851)
Net carrying value	[1]	877		935
Actual and Estimated Future Amortization Expense [Abstract]
Amortization expense		58	69
Estimated Amortization Expense [Abstract]
Remaining 2019		172
2020		197
2021		165
2022		133
2023		100
Covenant not to Compete [Member]
Amortized intangible assets [Abstract]
Gross carrying value	[1]	125		125
Accumulated amortization	[1]	(104)		(96)
Net carrying value	[1]	21		$ 29
Actual and Estimated Future Amortization Expense [Abstract]
Amortization expense		8	$ 8
Estimated Amortization Expense [Abstract]
Remaining 2019		21
2020		0
2021		0
2022		0
2023		$ 0

[1] Excludes fully amortized intangible assets.