Restructuring (Details) (USD $)	3 Months Ended				18 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2012	Dec. 31, 2011	Dec. 31, 2010
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost					$ 9,100,000
Restructuring and Related Cost, Cost Incurred to Date					8,800,000
Restructuring Reserve	1,392,000	2,513,000	4,605,000	1,833,000	1,392,000	3,099,000	0
Restructuring and Related Cost, Incurred Cost	564,000	135,000	4,304,000	1,982,000
Restructuring Reserve, Settled with Cash	(1,675,000)	(721,000)	(1,532,000)	(149,000)
Restructuring Reserve, Accrual Adjustment	(10,000)
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	1,181,000	2,198,000	3,267,000	1,161,000	1,181,000	2,658,000	0
Restructuring and Related Cost, Incurred Cost	22,000	(1,000)	2,500,000	1,161,000
Restructuring Reserve, Settled with Cash	(1,029,000)	(459,000)	(394,000)	0
Restructuring Reserve, Accrual Adjustment	(10,000)
Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	211,000	211,000	571,000	0	211,000	211,000	0
Restructuring and Related Cost, Incurred Cost	255,000	0	571,000	0
Restructuring Reserve, Settled with Cash	(255,000)	0	0	0
Restructuring Reserve, Accrual Adjustment	0
Professional Fees [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0	104,000	767,000	672,000	0	230,000	0
Restructuring and Related Cost, Incurred Cost	183,000	128,000	783,000	815,000
Restructuring Reserve, Settled with Cash	(287,000)	(254,000)	(688,000)	(143,000)
Restructuring Reserve, Accrual Adjustment	0
Other Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0	0	0	0	0	0	0
Restructuring and Related Cost, Incurred Cost	104,000	8,000	450,000	6,000
Restructuring Reserve, Settled with Cash	(104,000)	(8,000)	(450,000)	(6,000)
Restructuring Reserve, Accrual Adjustment	0
Private Banking Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date					6,200,000
Holding Company and Eliminations Segment [Domain]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date					$ 2,600,000