Financing Activities (Narrative) (Details) (USD $)	12 Months Ended				9 Months Ended		9 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended		12 Months Ended			12 Months Ended			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2012 item	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]	Dec. 31, 2012 Monroe Bancorp Statutory Trust II [Member]	Jun. 30, 2012 St. Joseph Capital Trust I [Member]	Dec. 31, 2012 St. Joseph Capital Trust I [Member]	Jul. 31, 2003 St. Joseph Capital Trust I [Member]	Dec. 31, 2012 St. Joseph Capital Trust II [Member]	Mar. 31, 2010 St. Joseph Capital Trust II [Member]	Mar. 31, 2005 St. Joseph Capital Trust II [Member]	Dec. 31, 2012 Home Federal Statutory Trust I [Member]	Dec. 31, 2012 Federal Home Loan Bank Advances [Member]	Dec. 31, 2011 Federal Home Loan Bank Advances [Member]	Dec. 31, 2011 Monroe Bancorp [Member] Subordinated Notes [Member]
Debt Instrument [Line Items]
Weighted-average rates of Federal Home Loan Bank Advances																3.07%	3.30%
Percentage of borrowings collateralized by investment securities and residential real estate loans																145.00%
Subordinated notes																		$ 13,000,000
Percentage, acquisition of subordinated notes																		10.00%
Preferred securities						3,000,000		5,000,000			3,000,000			5,000,000	15,000,000
Federal Home Loan Bank advances terminated																50,000,000
Loss on extinguishment of debt	1,949,000	789,000	6,107,000													1,900,000
Cumulative annual distribution rate of preferred securities													6.27%
Redemption of trust preferred securities									$ 3,000,000
Fixed rate of interest of preferred securities					7.15%			6.52%
Reference rate of the variable interest rate for preferred securities							three-month LIBOR plus 160 basis			three-month LIBOR plus 305 basis		three-month LIBOR plus 175 basis points			three-month LIBOR plus 165
Long-term capital lease obligation period, in years	25 years
Long-term capital lease obligation renewal period, in years	10 years
Number of renewal options for 10 year period				1