Loans and Allowance - Credit risk profile of Corporation's loan portfolio based on rating category (Details 3) (Loans Receivable, USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 335,544	$ 326,026
Construction/Land
Financing Receivable, Recorded Investment [Line Items]
Total loans	26,055	24,307
Construction/Land | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	21,907	20,023
Construction/Land | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	31	33
Construction/Land | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,117	4,251
Construction/Land | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans
1-4 family residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	133,904	137,298
1-4 family residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	124,969	124,765
1-4 family residential | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,817	4,144
1-4 family residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,013	7,691
1-4 family residential | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	105	698
Multi-family residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	20,936	16,408
Multi-family residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	19,881	14,798
Multi-family residential | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	42	44
Multi-family residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,013	1,566
Multi-family residential | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans
Nonresidential
Financing Receivable, Recorded Investment [Line Items]
Total loans	122,894	118,946
Nonresidential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	117,336	110,622
Nonresidential | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,486	2,686
Nonresidential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,923	5,066
Nonresidential | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	149	572
Commercial
Financing Receivable, Recorded Investment [Line Items]
Total loans	27,861	24,741
Commercial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	27,432	24,341
Commercial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	9	8
Commercial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	355	316
Commercial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	65	76
Consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,894	4,326
Consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,875	4,301
Consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans
Consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	19	25
Consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans