Nature of Operations and Summary of Significant Accounting Policies (Restatement) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Gross loans	$ 850,492	$ 836,550
Other assets	9,991	11,664
Loans, including fees	35,853	36,629	$ 37,575
All other interest income		14,519	12,843
Total interest income	51,502	51,148	50,418
Total interest expense	10,163	9,970	11,021
Net interest income	41,339	41,178	39,397
Provision for loan losses	(2,771)	(668)	1,111
Net interest income after provision for loan losses	44,110	41,846	38,286
Total noninterest income	10,359	9,325	10,175
Compensation and benefits	19,068	18,502	17,807
All other noninterest expenses		16,601	15,948
Total noninterest expenses	36,051	35,103	33,755
Federal income tax expense	3,288	2,344	2,196
NET INCOME	$ 15,130	13,724	12,510
Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Loans, including fees		39,432	41,233
All other interest income		14,519	12,843
Total interest income		53,951	54,076
Total interest expense		9,970	11,021
Net interest income		43,981	43,055
Provision for loan losses		(668)	1,111
Net interest income after provision for loan losses		44,649	41,944
Total noninterest income		9,325	10,175
Compensation and benefits		21,305	21,465
All other noninterest expenses		16,601	15,948
Total noninterest expenses		37,906	37,413
Federal income tax expense		2,344	2,196
NET INCOME		13,724	12,510
Restatement effect [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Gross loans		2,968
Other assets		(2,968)
Total interest income		$ 2,803	$ 3,658