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Regulatory Matters - Summary of Actual Capital Amounts and Ratios of Company and Bank (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Consolidated [Member]
   
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Total capital (to risk-weighted assets), actual amount $ 53,268 $ 49,534
Tier I capital (to risk-weighted assets), actual amount 48,357 44,946
Tier I capital (to average assets), actual amount 48,357 44,946
Total capital (to risk-weighted assets), actual ratio 13.60% 13.30%
Tier I capital (to risk-weighted assets), actual ratio 12.30% 12.10%
Tier I capital (to average assets), actual ratio 8.20% 7.90%
Total capital (to risk-weighted assets), minimum required for capital adequacy purposes amount 31,416 29,707
Tier I capital (to risk-weighted assets), minimum required for capital adequacy purposes amount 15,708 14,854
Tier I capital (to average assets), minimum required for capital adequacy purposes amount 23,550 22,794
Total capital (to risk-weighted assets), minimum required for capital adequacy purposes ratio 8.00% 8.00%
Tier I capital (to risk-weighted assets), minimum required for capital adequacy purposes ratio 4.00% 4.00%
Tier I capital (to average assets), minimum required for capital adequacy purposes ratio 4.00% 4.00%
Total capital (to risk-weighted assets), minimum required to be well capitalized under prompt corrective action amount 39,270 37,134
Tier I capital (to risk-weighted assets), minimum required to be well capitalized under prompt corrective action amount 23,562 22,280
Tier I capital (to average assets), minimum required to be well capitalized under prompt corrective action amount 29,438 28,493
Total capital (to risk-weighted assets), minimum required to be well capitalized under prompt corrective action ratio 10.00% 10.00%
Tier I capital (to risk-weighted assets), minimum required to be well capitalized under prompt corrective action ratio 6.00% 6.00%
Tier I capital (to average assets), minimum required to be well capitalized under prompt corrective action ratio 5.00% 5.00%
Bank [Member]
   
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Total capital (to risk-weighted assets), actual amount 52,458 48,940
Tier I capital (to risk-weighted assets), actual amount 47,558 44,352
Tier I capital (to average assets), actual amount 47,558 44,352
Total capital (to risk-weighted assets), actual ratio 13.40% 13.20%
Tier I capital (to risk-weighted assets), actual ratio 12.10% 12.00%
Tier I capital (to average assets), actual ratio 8.10% 7.80%
Total capital (to risk-weighted assets), minimum required for capital adequacy purposes amount 31,392 29,695
Tier I capital (to risk-weighted assets), minimum required for capital adequacy purposes amount 15,696 14,847
Tier I capital (to average assets), minimum required for capital adequacy purposes amount 23,544 22,788
Total capital (to risk-weighted assets), minimum required for capital adequacy purposes ratio 8.00% 8.00%
Tier I capital (to risk-weighted assets), minimum required for capital adequacy purposes ratio 4.00% 4.00%
Tier I capital (to average assets), minimum required for capital adequacy purposes ratio 4.00% 4.00%
Total capital (to risk-weighted assets), minimum required to be well capitalized under prompt corrective action amount 39,240 37,118
Tier I capital (to risk-weighted assets), minimum required to be well capitalized under prompt corrective action amount 23,544 22,271
Tier I capital (to average assets), minimum required to be well capitalized under prompt corrective action amount $ 29,430 $ 28,485
Total capital (to risk-weighted assets), minimum required to be well capitalized under prompt corrective action ratio 10.00% 10.00%
Tier I capital (to risk-weighted assets), minimum required to be well capitalized under prompt corrective action ratio 6.00% 6.00%
Tier I capital (to average assets), minimum required to be well capitalized under prompt corrective action ratio 5.00% 5.00%