Junior Subordinated Debt (Information relating to the Trusts) (Details) (USD $) In Thousands, unless otherwise specified			6 Months Ended
	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2011 FNB Statutory Trust One [Member]	Jun. 30, 2011 FNB Statutory Trust Two [Member]	Jun. 30, 2011 Omega Financial Capital Trust One [Member]	Jun. 30, 2011 Sun Bancorp Statutory Trust One [Member]
Trust preferred securities			$ 125,000	$ 21,500	$ 36,000	$ 16,500
Common securities			3,866	665	1,114	511
Junior subordinated debt	$ 203,941	$ 204,036	$ 128,866	$ 22,165	$ 35,899	$ 17,011
Stated maturity date			Mar. 31, 2033	Jun. 15, 2036	Oct. 18, 2034	Feb. 22, 2031
Interest rate			3.56% Variable; LIBOR plus 325 basis points	1.90% fixed until 6/15/11; then LIBOR plus 165 basis points	2.47% Variable; LIBOR plus 219 basis points	10.20%
Number of unconsolidated subsidiary trusts	4