Taxes - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Income Tax Disclosure [Abstract]    
Net gain from the sale of available-for-sale securities $ 117,000 $ 770,000
Tax rate 34.00% 34.00%
Net gain from the sale of available-for-sale securities, tax amount $ 40,000 $ 262,000
Low income housing credits carried forward period 20 years  
Net operating losses carried forward period 20 years  
Low income housing credits carried forward description The low income housing credits (“LIHC”) and net operating losses (“NOL”) can both be carried forward for 20 years. The LIHC credits have accumulated for 2006-2013 and will not expire until 2026-2033.  
Net operating losses carried forward description The low income housing credits (“LIHC”) and net operating losses (“NOL”) can both be carried forward for 20 years. The NOL has accumulated for 2010 - 2013 and will not expire until 2030-2033.