Restructuring (Details) (USD $)	3 Months Ended						45 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date							$ 14,000,000
Restructuring Reserve	0	0	0	897,000	1,903,000	2,879,000	0	33,000	3,623,000
Restructuring and Related Cost, Incurred Cost	0	0	0	0	0	0
Restructuring Reserve, Settled with Cash	0	0	(33,000)	(1,006,000)	(976,000)	(744,000)
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0	0	0	799,000	1,805,000	2,781,000	0	33,000	3,517,000
Restructuring and Related Cost, Incurred Cost	0	0	0	0	0	0
Restructuring Reserve, Settled with Cash	0	0	(33,000)	(1,006,000)	(976,000)	(736,000)
Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0	0	0	98,000	98,000	98,000	0	0	98,000
Restructuring and Related Cost, Incurred Cost	0	0	0	0	0	0
Restructuring Reserve, Settled with Cash	0	0	0	0	0	0
Restructuring Related Professional Fees [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0	0	0	0	0	0	0	0	8,000
Restructuring and Related Cost, Incurred Cost	0	0	0	0	0	0
Restructuring Reserve, Settled with Cash	0	0	0	0	0	(8,000)
Private Banking Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date							9,500,000
Holding Company and Eliminations Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date							4,500,000
Senior Executive Restructuring Plan 2012 [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost							0
Restructuring and Related Cost, Cost Incurred to Date							$ 4,800,000