Short-Term Borrowings and Long-Term Debt Subordinated Debt (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended		12 Months Ended
	Dec. 31, 2011 subsidiarytrusts	Dec. 31, 2011 Junior Subordinated Debt [Member]	Dec. 31, 2011 Junior Subordinated Debt [Member] SBV Eagle Statutory Trust [Member]	Dec. 31, 2011 Junior Subordinated Debt [Member] Columbia Bancorp Statutory Trust [Member]	Dec. 31, 2011 Junior Subordinated Debt [Member] Columbia Bancorp Statutory Trust II [Member]	Dec. 31, 2011 Junior Subordinated Debt [Member] Columbia Bancorp Statutory Trust III [Member]	Dec. 31, 2011 Junior Subordinated Debt [Member] Fulton Capital Trust I [Member]	May 31, 2007 Subordinated Debt [Member] May 2017 Subordinated Debt [Member]	Mar. 31, 2005 Subordinated Debt [Member] April 2015 Subordinated Debt [Member]
Subordinated Borrowing [Line Items]
Number Of Subsidiary Trusts Owned By Parent	5
Subordinated Borrowing, Interest Rate			3.73%	3.23%	2.44%	2.32%	6.29%
Subordinated Debt		$ 175,260	$ 4,124	$ 6,186	$ 4,124	$ 6,186	$ 154,640	$ 100,000	$ 100,000
Subordinated Borrowing, Due Date			Jul. 31, 2031	Jun. 30, 2034	Mar. 15, 2035	Jun. 15, 2035	Feb. 01, 2036
Subordinated Borrowing Callable Price			1.000	1.000	1.000	1.000
Subordinated Debt [Abstract]
Subordinated Debt Term								10 years	10 years
Debt Instrument, Interest Rate, Stated Percentage								5.75%	5.35%
Debt Instrument, Interest Rate, Effective Percentage								5.96%	5.49%