XML 129 R74.htm IDEA: XBRL DOCUMENT v2.4.0.8
Litigation, Commitments and Contingencies - Additional Information (Detail) (USD $)
Jun. 30, 2013
Dec. 31, 2012
Commitments and Contingencies [Line Items]    
Commitments to extend credit including availability on lines of credit $ 200,650,000 $ 215,770,000
Gross notional amounts of outstanding commitments 9,070,000 14,840,000
Standby letters of credit and financial guarantees 4,740,000 6,810,000
Reserve for unfunded lending commitments 326,000 326,000
Trust preferred securities $ 15,000,000