Segment and Related Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) segment	Jun. 30, 2014 USD ($)	Jan. 01, 2015 USD ($)	Dec. 31, 2014 USD ($)	[1]
Segment Reporting [Abstract]
Number of reportable segments | segment			2
Segment Reporting Information [Line Items]
Interest income	$ 13,837	$ 11,780	$ 27,676	$ 23,734
Interest expense	1,455	1,429	2,916	2,924
Noninterest income	3,258	2,700	6,414	5,403
Income (loss) before income taxes	3,898	4,536	8,785	9,275
Net income (loss)	2,880	3,233	6,395	6,683
Depreciation and amortization	742	753	1,483	1,518
Total assets	1,524,356	1,300,648	1,524,356	1,300,648		$ 1,346,492
Goodwill	44,210	39,043	44,210	39,043	$ 5,167	$ 39,043
Capital expenditures	253	147	601	266
Community Banking [Member]
Segment Reporting Information [Line Items]
Interest income	13,822	11,765	27,646	23,704
Interest expense	1,267	1,244	2,544	2,555
Noninterest income	2,038	1,539	4,021	2,970
Income (loss) before income taxes	3,647	4,079	8,154	8,150
Net income (loss)	2,671	2,891	5,896	5,840
Depreciation and amortization	739	751	1,477	1,513
Total assets	1,522,208	1,298,664	1,522,208	1,298,664
Goodwill	44,210	39,043	44,210	39,043
Capital expenditures	232	147	580	266
Trust and Investment Services [Member]
Segment Reporting Information [Line Items]
Interest income	0	0	0	0
Interest expense	0	0	0	0
Noninterest income	1,215	1,156	2,383	2,423
Income (loss) before income taxes	573	777	1,223	1,651
Net income (loss)	422	553	890	1,190
Depreciation and amortization	3	2	6	5
Total assets	0	0	0	0
Goodwill	0	0	0	0
Capital expenditures	21	0	21	0
Other [Member]
Segment Reporting Information [Line Items]
Interest income	15	15	30	30
Interest expense	188	185	372	369
Noninterest income	5	5	10	10
Income (loss) before income taxes	(322)	(320)	(592)	(526)
Net income (loss)	(213)	(211)	(391)	(347)
Depreciation and amortization	0	0	0	0
Total assets	222,526	199,621	222,526	199,621
Goodwill	0	0	0	0
Capital expenditures	0	0	0	0
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Interest income	0	0	0	0
Interest expense	0	0	0	0
Noninterest income	0	0	0	0
Income (loss) before income taxes	0	0	0	0
Net income (loss)	0	0	0	0
Depreciation and amortization	0	0	0	0
Total assets	(220,378)	(197,637)	(220,378)	(197,637)
Goodwill	0	0	0	0
Capital expenditures	$ 0	$ 0	$ 0	$ 0

[1] Derived from audited consolidated financial statements.