Loans And Leases - Summary of Contractual Aging of Loans in Past Due, by Class of Loans (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 89,875,000	$ 92,249,000
30-59 Days Past Due	114,000	341,000
60-89 Days Past Due	47,000	9,000
90 Days or more Past Due	934,000	803,000
Total Past Due	1,095,000	1,153,000
90 Days or more Past Due and Accruing
Total Loans	17,251,000	16,725,000
Commercial real estate, Total Loans	41,495,000	44,107,000
Consumer Real Estate	28,379,000	28,624,000
Consumer	3,236,000	3,456,000
Unearned interest and deferred fees	(137,000)	(133,000)
Net loans	90,969,968	93,401,845
Commercial and Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	17,215,000	16,693,000
30-59 Days Past Due	4,000	10,000
60-89 Days Past Due
90 Days or more Past Due	32,000	22,000
Total Past Due	36,000	32,000
90 Days or more Past Due and Accruing
Total Loans	17,251,000	16,725,000
Net loans	17,251,000	16,725,000
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	40,611,000	43,244,000
30-59 Days Past Due	20,000	159,000
60-89 Days Past Due	36,000
90 Days or more Past Due	828,000	704,000
Total Past Due	884,000	863,000
90 Days or more Past Due and Accruing
Commercial real estate, Total Loans	41,495,000	44,107,000
Net loans	41,495,000	44,107,000
Consumer Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	28,958,000	28,994,000
30-59 Days Past Due	85,000	168,000
60-89 Days Past Due	8,000	9,000
90 Days or more Past Due	74,000	76,000
Total Past Due	167,000	253,000
90 Days or more Past Due and Accruing
Consumer Real Estate	29,125,000	29,247,000
Net loans	29,125,000	29,247,000
Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	3,228,000	3,451,000
30-59 Days Past Due	5,000	4,000
60-89 Days Past Due	3,000
90 Days or more Past Due		1,000
Total Past Due	8,000	5,000
90 Days or more Past Due and Accruing
Consumer	3,236,000	3,456,000
Net loans	3,236,000	3,456,000
Unearned Interest and Deferred Fees [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	(137,000)	(133,000)
30-59 Days Past Due
60-89 Days Past Due
90 Days or more Past Due
Total Past Due
90 Days or more Past Due and Accruing
Unearned interest and deferred fees	(137,000)	(133,000)
Non Accrual Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	174,000	172,000
30-59 Days Past Due	105,000	286,000
60-89 Days Past Due	11,000	9,000
90 Days or more Past Due	925,000	803,000
Total Past Due	1,041,000	1,098,000
90 Days or more Past Due and Accruing
Total Loans	1,215,000	1,270,000
Non Accrual Loans [Member] | Commercial and Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	2,000	4,000
30-59 Days Past Due
60-89 Days Past Due
90 Days or more Past Due	23,000	22,000
Total Past Due	23,000	22,000
90 Days or more Past Due and Accruing
Total Loans	25,000	26,000
Non Accrual Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current		22,000
30-59 Days Past Due	20,000	159,000
60-89 Days Past Due
90 Days or more Past Due	828,000	704,000
Total Past Due	848,000	863,000
90 Days or more Past Due and Accruing
Total Loans	848,000	885,000
Non Accrual Loans [Member] | Consumer Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	172,000	146,000
30-59 Days Past Due	85,000	124,000
60-89 Days Past Due	8,000	9,000
90 Days or more Past Due	74,000	76,000
Total Past Due	167,000	209,000
90 Days or more Past Due and Accruing
Total Loans	339,000	355,000
Non Accrual Loans [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current
30-59 Days Past Due		3,000
60-89 Days Past Due	3,000
90 Days or more Past Due		1,000
Total Past Due	3,000	4,000
90 Days or more Past Due and Accruing
Total Loans	3,000
Consumer		$ 4,000