Segment and Related Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) segment	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)	[1]
Segment Reporting [Abstract]
Number of reportable segments | segment	2
Segment Reporting Information [Line Items]
Interest income	$ 14,681	$ 14,171
Interest expense	1,547	1,587
Noninterest income	3,271	3,297
Income (loss) before income taxes	5,664	5,913
Net income (loss)	4,063	4,128
Depreciation and amortization	609	763
Total assets	1,715,805	1,582,554	$ 1,678,638
Goodwill	43,872	43,872	$ 43,872
Capital expenditures	663	149
Operating Segments | Community Banking
Segment Reporting Information [Line Items]
Interest income	14,596	14,156
Interest expense	1,308	1,379
Noninterest income	2,161	2,158
Income (loss) before income taxes	5,457	5,616
Net income (loss)	3,896	3,907
Depreciation and amortization	606	760
Total assets	1,706,564	1,580,264
Goodwill	43,872	43,872
Capital expenditures	657	149
Operating Segments | Trust and Investment Services
Segment Reporting Information [Line Items]
Interest income	0	0
Interest expense	0	0
Noninterest income	1,104	1,134
Income (loss) before income taxes	541	655
Net income (loss)	388	457
Depreciation and amortization	3	3
Total assets	0	0
Goodwill	0	0
Capital expenditures	6	0
Other
Segment Reporting Information [Line Items]
Interest income	85	15
Interest expense	239	208
Noninterest income	6	5
Income (loss) before income taxes	(334)	(358)
Net income (loss)	(221)	(236)
Depreciation and amortization	0	0
Total assets	232,206	224,313
Goodwill	0	0
Capital expenditures	0	0
Intersegment Eliminations
Segment Reporting Information [Line Items]
Interest income	0	0
Interest expense	0	0
Noninterest income	0	0
Income (loss) before income taxes	0	0
Net income (loss)	0	0
Depreciation and amortization	0	0
Total assets	(222,965)	(222,023)
Goodwill	0	0
Capital expenditures	$ 0	$ 0

[1] Derived from audited consolidated financial statements.