Securities - Summary of Securities (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Available-for-sale	$ 102,692	$ 102,253
Gross Unrealized Gains, Available-for-sale	1,149	1,023
Gross Unrealized Losses, Available-for-sale	907	1,554
Fair Value, Available-for-sale	102,934	101,722
Amortized Cost, Held to maturity	43,688	44,350
Gross Unrealized Gains, Held to maturity	85
Gross Unrealized Losses, Held to maturity	785	1,707
Fair Value, Held to maturity	42,988	42,643
Amortized Cost	150,993	152,066
Gross Unrealized Gains	1,234	1,023
Gross Unrealized Losses	1,692	3,261
Fair Value	150,535	149,828
Restricted Stock [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	4,613	5,463
Gross Unrealized Gains
Gross Unrealized Losses
Fair Value	4,613	5,463
U.S. Treasury Security [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Available-for-sale	1,005	1,005
Gross Unrealized Gains, Available-for-sale
Gross Unrealized Losses, Available-for-sale	9	8
Fair Value, Available-for-sale	996	997
U.S. Government agencies [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Available-for-sale	25,534	22,999
Gross Unrealized Gains, Available-for-sale	9	8
Gross Unrealized Losses, Available-for-sale	494	706
Fair Value, Available-for-sale	25,049	22,301
Amortized Cost, Held to maturity	19,204	19,186
Gross Unrealized Gains, Held to maturity	2
Gross Unrealized Losses, Held to maturity	311	828
Fair Value, Held to maturity	18,895	18,358
Mortgage-Backed Securities of Government Agencies [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Available-for-sale	52,429	54,455
Gross Unrealized Gains, Available-for-sale	638	536
Gross Unrealized Losses, Available-for-sale	291	691
Fair Value, Available-for-sale	52,776	54,300
Amortized Cost, Held to maturity	24,484	25,164
Gross Unrealized Gains, Held to maturity	83
Gross Unrealized Losses, Held to maturity	474	879
Fair Value, Held to maturity	24,093	24,285
Other Mortgage-Backed Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Available-for-sale	216	230
Gross Unrealized Gains, Available-for-sale	4	5
Gross Unrealized Losses, Available-for-sale
Fair Value, Available-for-sale	220	235
Asset-backed securities of government agencies [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Available-for-sale	2,708	2,739
Gross Unrealized Gains, Available-for-sale	13	36
Gross Unrealized Losses, Available-for-sale	7
Fair Value, Available-for-sale	2,714	2,775
State and political subdivisions [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Available-for-sale	16,193	16,219
Gross Unrealized Gains, Available-for-sale	424	371
Gross Unrealized Losses, Available-for-sale	104	143
Fair Value, Available-for-sale	16,513	16,447
Corporate bonds [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Available-for-sale	4,501	4,500
Gross Unrealized Gains, Available-for-sale	41	44
Gross Unrealized Losses, Available-for-sale	2	5
Fair Value, Available-for-sale	4,540	4,539
Equity securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Available-for-sale	106	106
Gross Unrealized Gains, Available-for-sale	20	23
Gross Unrealized Losses, Available-for-sale		1
Fair Value, Available-for-sale	$ 126	$ 128