Loans (Details 4) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Commercial Credit Exposure
Loans receivable, commercial credit exposure	$ 356,742	$ 344,933
High quality (risk rating 1)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	44	38
Minimal (risk rating 2)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	44,647	38,992
Average (risk rating 3)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	215,356	193,759
Acceptable (risk rating 4)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	64,247	81,235
Watch (risk rating 5)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	17,350	18,319
Substandard (risk rating 6)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	1,469	3,123
Impaired loans (risk rating 7)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	13,629	9,467
Commercial Loan
Commercial Credit Exposure
Loans receivable, commercial credit exposure	115,929	114,243
Commercial Loan | High quality (risk rating 1)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	44	38
Commercial Loan | Minimal (risk rating 2)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	24,085	16,360
Commercial Loan | Average (risk rating 3)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	51,745	51,846
Commercial Loan | Acceptable (risk rating 4)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	26,395	32,002
Commercial Loan | Watch (risk rating 5)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	8,146	8,271
Commercial Loan | Substandard (risk rating 6)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	654	617
Commercial Loan | Impaired loans (risk rating 7)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	4,860	5,109
Commercial Real Estate
Commercial Credit Exposure
Loans receivable, commercial credit exposure	212,850	183,818
Commercial Real Estate | High quality (risk rating 1)
Commercial Credit Exposure
Loans receivable, commercial credit exposure
Commercial Real Estate | Minimal (risk rating 2)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	19,249	20,193
Commercial Real Estate | Average (risk rating 3)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	145,673	103,454
Commercial Real Estate | Acceptable (risk rating 4)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	34,154	45,699
Commercial Real Estate | Watch (risk rating 5)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	7,572	8,291
Commercial Real Estate | Substandard (risk rating 6)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	815	2,179
Commercial Real Estate | Impaired loans (risk rating 7)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	5,387	4,002
Construction and Development
Commercial Credit Exposure
Loans receivable, commercial credit exposure	13,672	28,482
Construction and Development | High quality (risk rating 1)
Commercial Credit Exposure
Loans receivable, commercial credit exposure
Construction and Development | Minimal (risk rating 2)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	120	305
Construction and Development | Average (risk rating 3)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	8,863	22,573
Construction and Development | Acceptable (risk rating 4)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	2,917	3,318
Construction and Development | Watch (risk rating 5)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	1,632	1,757
Construction and Development | Substandard (risk rating 6)
Commercial Credit Exposure
Loans receivable, commercial credit exposure		327
Construction and Development | Impaired loans (risk rating 7)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	140	202
Agricultural
Commercial Credit Exposure
Loans receivable, commercial credit exposure	4,254	4,265
Agricultural | High quality (risk rating 1)
Commercial Credit Exposure
Loans receivable, commercial credit exposure
Agricultural | Minimal (risk rating 2)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	1,115	559
Agricultural | Average (risk rating 3)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	2,563	3,336
Agricultural | Acceptable (risk rating 4)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	424	216
Agricultural | Watch (risk rating 5)
Commercial Credit Exposure
Loans receivable, commercial credit exposure
Agricultural | Substandard (risk rating 6)
Commercial Credit Exposure
Loans receivable, commercial credit exposure
Agricultural | Impaired loans (risk rating 7)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	152	154
Government
Commercial Credit Exposure
Loans receivable, commercial credit exposure	10,037	14,125
Government | High quality (risk rating 1)
Commercial Credit Exposure
Loans receivable, commercial credit exposure
Government | Minimal (risk rating 2)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	78	1,575
Government | Average (risk rating 3)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	6,512	12,550
Government | Acceptable (risk rating 4)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	357
Government | Watch (risk rating 5)
Commercial Credit Exposure
Loans receivable, commercial credit exposure
Government | Substandard (risk rating 6)
Commercial Credit Exposure
Loans receivable, commercial credit exposure
Government | Impaired loans (risk rating 7)
Commercial Credit Exposure
Loans receivable, commercial credit exposure	$ 3,090