Loans and Allowance for Loan Losses Schedule of Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Loans, Recorded Investment [Line Items]
Loans, gross	$ 1,247,749	$ 1,184,651
Commercial loan [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	349,051	316,908
Construction, land and land development [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	174,602	154,490
1-4 family residential first mortgages [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	51,370	53,497
Home Equity Loan [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	21,749	24,500
Commercial real estate [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	644,176	625,938
Consumer and other loans [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	6,801	9,318
Pass [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	1,216,193	1,161,786
Pass [Member] | Commercial loan [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	344,650	309,704
Pass [Member] | Construction, land and land development [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	173,373	151,258
Pass [Member] | 1-4 family residential first mortgages [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	50,375	52,574
Pass [Member] | Home Equity Loan [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	21,401	23,958
Pass [Member] | Commercial real estate [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	619,608	614,974
Pass [Member] | Consumer and other loans [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	6,786	9,318
Watch [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	26,498	15,482
Watch [Member] | Commercial loan [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	2,936	6,268
Watch [Member] | Construction, land and land development [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	0	993
Watch [Member] | 1-4 family residential first mortgages [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	517	536
Watch [Member] | Home Equity Loan [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	68	218
Watch [Member] | Commercial real estate [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	22,977	7,467
Watch [Member] | Consumer and other loans [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	0	0
Substandard [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	5,058	7,383
Substandard [Member] | Commercial loan [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	1,465	936
Substandard [Member] | Construction, land and land development [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	1,229	2,239
Substandard [Member] | 1-4 family residential first mortgages [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	478	387
Substandard [Member] | Home Equity Loan [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	280	324
Substandard [Member] | Commercial real estate [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	1,591	3,497
Substandard [Member] | Consumer and other loans [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	15	0
Doubtful [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	0	0
Doubtful [Member] | Commercial loan [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	0	0
Doubtful [Member] | Construction, land and land development [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	0	0
Doubtful [Member] | 1-4 family residential first mortgages [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	0	0
Doubtful [Member] | Home Equity Loan [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	0	0
Doubtful [Member] | Commercial real estate [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	0	0
Doubtful [Member] | Consumer and other loans [Member]
Loans, Recorded Investment [Line Items]
Loans, gross	$ 0	$ 0