Loans - Summary of Company's TDRs (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Modifications [Line Items]
Current	$ 1,628	$ 1,354
Greater than 30 Days Past Due
Nonaccrual TDRs	238	982
Total Loans	1,866	2,336
Total real estate loans [Member]
Financing Receivable, Modifications [Line Items]
Current	1,291	970
Greater than 30 Days Past Due
Nonaccrual TDRs	238	982
Total Loans	1,529	1,952
Total real estate loans [Member] | Construction [Member]
Financing Receivable, Modifications [Line Items]
Current	309	47
Greater than 30 Days Past Due
Nonaccrual TDRs
Total Loans	309	47
Total real estate loans [Member] | Commercial real estate [Member]
Financing Receivable, Modifications [Line Items]
Current	357	268
Greater than 30 Days Past Due
Nonaccrual TDRs	102	982
Total Loans	459	1,250
Total real estate loans [Member] | Consumer real estate [Member]
Financing Receivable, Modifications [Line Items]
Current	625	655
Greater than 30 Days Past Due
Nonaccrual TDRs	136
Total Loans	761	655
Other Loans [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Current	337	384
Greater than 30 Days Past Due
Nonaccrual TDRs
Total Loans	$ 337	$ 384