Financing Activities - Additional Information (Detail) (USD $)	12 Months Ended			3 Months Ended	12 Months Ended						0 Months Ended	3 Months Ended		0 Months Ended		0 Months Ended	1 Months Ended		1 Months Ended
	Mar. 31, 2014 Item	Dec. 31, 2013	Mar. 31, 2013	Mar. 31, 2013 Federal Home Loan Bank Advances [Member]	Dec. 31, 2013 Federal Home Loan Bank Advances [Member]	Mar. 31, 2014 Federal Home Loan Bank Advances [Member]	Mar. 31, 2013 Federal Home Loan Bank Advance One [Member] Pre Restructuring [Member]	Mar. 31, 2013 Federal Home Loan Bank Advance One [Member] Post Restructuring [Member]	Mar. 31, 2013 Federal Home Loan Bank Advance Two [Member] Pre Restructuring [Member]	Mar. 31, 2013 Federal Home Loan Bank Advance Two [Member] Post Restructuring [Member]	Mar. 31, 2010 St Joseph Capital Trust II [Member]	Mar. 31, 2014 St Joseph Capital Trust II [Member]	Mar. 31, 2005 St Joseph Capital Trust II [Member]	Oct. 07, 2011 Monroe Bancorp Capital Trust I [Member]	Jul. 31, 2006 Monroe Bancorp Capital Trust I [Member]	Oct. 07, 2011 Monroe Bancorp Statutory Trust II [Member]	Jun. 15, 2012 Monroe Bancorp Statutory Trust II [Member]	Mar. 31, 2007 Monroe Bancorp Statutory Trust II [Member]	Sep. 30, 2006 Home Federal Statutory Trust I [Member]
Proforma Debt Instrument [Line Items]
Weighted-average rates of Federal Home Loan Bank advances					0.94%	1.04%
Percentage of borrowings collateralized by investment securities and residential real estate loans						145.00%
Loss on extinguishment of debt		$ 1,000,000			$ 50,000,000
Advances from Federal Home Loan Banks restructured				33,400,000
FHLB advances effective interest rate							3.27%	3.29%	2.04%	2.49%
Preferred securities	$ 0	$ 0	$ 0										$ 5,000,000		$ 3,000,000			$ 5,000,000	$ 15,000,000
Cumulative annual distribution rate of preferred securities											6.27%
Reference rate of the variable interest rate for preferred securities												Three-month LIBOR plus 175 basis points				Three-month LIBOR plus 160 basis points			Three-month LIBOR plus 165 basis points
LIBOR rate												1.75%				1.60%			1.65%
Variable interest rate for preferred securities, Maturity date												Mar. 17, 2035
Fixed rate of interest of preferred securities														7.15%			6.52%
Long-term capital lease obligation period, in years	25 years
Long-term capital lease obligation renewal period, in years	10 years
Number of renewal option for 10 years period	1