Loans - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2014 Loan_Grade
Real Estate, Mortgage [Member]
Schedule Of Financial Receivables [Line Items]
Troubled debt restructurings loans segment	$ 1,652,903
Minimum [Member]
Schedule Of Financial Receivables [Line Items]
Loan on factors			1
Maximum [Member]
Schedule Of Financial Receivables [Line Items]
Loan on factors			5
Maximum [Member] | Real Estate, Mortgage [Member]
Schedule Of Financial Receivables [Line Items]
Troubled debt restructurings loans segment	9,136,954	527,677
Maximum [Member] | Real Estate, Construction [Member]
Schedule Of Financial Receivables [Line Items]
Troubled debt restructurings loans segment	891,782	182,164
Maximum [Member] | Commercial and Industrial [Member]
Schedule Of Financial Receivables [Line Items]
Troubled debt restructurings loans segment	$ 677,901