Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows from Operating Activities
Net income	$ 12,720	$ 11,664	$ 10,340
Adjustments to reconcile net income to net cash from operating activities:
Depreciation	1,613	1,464	1,365
Amortization of available-for-sale securities, net	1,106	1,146	1,239
Amortization of servicing rights	353	419	374
Amortization of core deposit intangible	245	323	323
Compensation expense related to stock awards	507	402	314
Provision for loan loss	222	1,121	625
Gain on sale of loans held for sale	(811)	(888)	(700)
Originations of loans held for sale	(57,391)	(66,014)	(52,706)
Proceeds from sale of loans held for sale	59,520	63,988	52,764
Loss on sale of other assets owned	27	81	47
Gain on sales of available-for sale securities	(47)	(588)	(451)
Change in other assets and other liabilities, net	1,194	(688)	1,275
Net Cash Provided by Operating Activities	19,258	12,430	14,809
Activity in securities:
Maturities, prepayments and calls	23,064	41,825	26,059
Sales	13,562	85,723	47,029
Purchases	(15,335)	(114,819)	(60,925)
Change in interest-bearing time deposits	(2,103)	(1,915)
Proceeds from sales of other assets owned	21	41	64
Additions to premises and equipment	(1,794)	(2,406)	(1,716)
Loan originations and principal collections, net	(67,197)	(72,639)	(64,483)
Net cash used in investing activities	(49,782)	(64,190)	(53,972)
Cash Flows from Financing Activities
Net change in deposits	77,137	70,864	8,779
Net change in federal funds purchased and securities sold under agreements to repurchase	(30,829)	(8,491)	22,853
Proceeds of FHLB advances			10,000
Repayment of FHLB advances	(5,000)
Purchase of Treasury Stock	(196)	(194)	(803)
Cash dividends paid on common stock	(4,443)	(4,115)	(3,943)
Net cash provided by financing activities	36,669	58,064	36,886
Net Increase (Decrease) in Cash and Cash Equivalents	6,145	6,304	(2,277)
Cash and Cash Equivalents - Beginning of Year	28,322	22,018	24,295
Cash and Cash Equivalents - End of Year	34,467	28,322	22,018
Cash paid during the year for:
Interest	5,064	4,151	3,610
Income taxes	5,102	5,012	3,079
Noncash investing activities:
Transfer of loans to other real estate owned	$ 59	$ 419	$ 231

Cash Paid During Period [Abstract]

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- Definition

The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.