Loans and Allowance for Loan Losses, Age Analysis of Past Due Loans Receivable (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Age analysis of past due loans receivable [Abstract]
30 to 59 Days Past Due	$ 3,951	$ 3,436
60 to 89 Days Past Due	2,819	2,449
90 Days or More Past Due	3,987	5,010
Total Past Due	10,757	10,895
Current	433,947	429,566
Loans receivable, ending balance	444,704	440,461
Carrying Amount > 90 Days and Accruing	2,723	4,551
Nonaccruals	1,593	1,227	2,002
Commercial and Industrial [Member]
Age analysis of past due loans receivable [Abstract]
30 to 59 Days Past Due	156	140
60 to 89 Days Past Due	88	106
90 Days or More Past Due	127	0
Total Past Due	371	246
Current	29,518	26,678
Loans receivable, ending balance	29,889	26,924
Carrying Amount > 90 Days and Accruing	2	0
Nonaccruals	156	166
Commercial Real Estate [Member]
Age analysis of past due loans receivable [Abstract]
30 to 59 Days Past Due	96	444
60 to 89 Days Past Due	912	0
90 Days or More Past Due	0	0
Total Past Due	1,008	444
Current	164,403	165,084
Loans receivable, ending balance	165,411	165,528
Carrying Amount > 90 Days and Accruing	0	0
Nonaccruals	96	98
Construction and Land [Member]
Age analysis of past due loans receivable [Abstract]
30 to 59 Days Past Due	0	551
60 to 89 Days Past Due	143	145
90 Days or More Past Due	0	0
Total Past Due	143	696
Current	38,625	38,389
Loans receivable, ending balance	38,768	39,085
Carrying Amount > 90 Days and Accruing	0	0
Nonaccruals	144	1
Consumer [Member]
Age analysis of past due loans receivable [Abstract]
30 to 59 Days Past Due	18	8
60 to 89 Days Past Due	4	18
90 Days or More Past Due	0	0
Total Past Due	22	26
Current	3,034	2,989
Loans receivable, ending balance	3,056	3,015
Carrying Amount > 90 Days and Accruing	0	0
Nonaccruals	0	0
Student US Government Guaranteed [Member]
Age analysis of past due loans receivable [Abstract]
30 to 59 Days Past Due	1,836	1,445
60 to 89 Days Past Due	1,069	830
90 Days or More Past Due	2,721	4,551
Total Past Due	5,626	6,826
Current	12,994	12,874
Loans receivable, ending balance	18,620	19,700
Carrying Amount > 90 Days and Accruing	2,721	4,551
Nonaccruals		0
Residential Real Estate [Member]
Age analysis of past due loans receivable [Abstract]
30 to 59 Days Past Due	1,215	798
60 to 89 Days Past Due	474	1,242
90 Days or More Past Due	1,089	459
Total Past Due	2,778	2,499
Current	144,029	140,978
Loans receivable, ending balance	146,807	143,477
Carrying Amount > 90 Days and Accruing	0	0
Nonaccruals	1,147	962
Home Equity Line of Credit [Member]
Age analysis of past due loans receivable [Abstract]
30 to 59 Days Past Due	630	50
60 to 89 Days Past Due	129	108
90 Days or More Past Due	50	0
Total Past Due	809	158
Current	41,344	42,574
Loans receivable, ending balance	42,153	42,732
Carrying Amount > 90 Days and Accruing	0	0
Nonaccruals	$ 50	$ 0