Reportable Segments (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Interest Income (Expense), Net		$ 49,879	$ 46,072
Noninterest Income		38,022	41,345
Revenues		87,901	87,417
Provision/ (credit) for loan losses		(3,133)	(2,500)
Noninterest Expense		66,709	63,427
Income before income taxes		24,325	26,490
Income tax expense		7,438	8,572
Net income from continuing operations		16,887	17,918
Net income attributable to noncontrolling interests		911	1,229
Net income from discontinued operations	[1]	2,065	2,094
Net income attributable to the Company		18,041	18,783
Total assets		7,413,663	6,869,772	$ 7,542,508
Assets under Management, Carrying Amount		26,811,000	30,025,000
Amortization of intangibles		1,586	1,602
Depreciation		1,676	1,704
Private Banking Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net		50,420	46,990
Noninterest Income		3,378	2,784
Revenues		53,798	49,774
Provision/ (credit) for loan losses		(3,133)	(2,500)
Noninterest Expense		31,275	28,805
Income before income taxes		25,656	23,469
Income tax expense		8,374	7,768
Net income from continuing operations		17,282	15,701
Net income attributable to the Company		17,282	15,701
Total assets		7,250,371	6,688,472
Amortization of intangibles		0	46
Depreciation		1,146	1,205
Wealth Management and Trust Segment [Member]
Segment Reporting Information [Line Items]
Noninterest Income		11,056	13,957
Noninterest Expense	[2]	15,852	12,331
Income before income taxes		(4,796)	1,626
Income tax expense		(1,939)	694
Net income from continuing operations		(2,857)	932
Net income attributable to the Company		(2,857)	932
Total assets		84,253	79,139
Assets under Management, Carrying Amount		7,137,000	9,305,000
Amortization of intangibles		745	571
Depreciation		231	187
Investment Managers Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net		4	6
Noninterest Income		10,659	11,722
Revenues		10,663	11,728
Noninterest Expense		8,024	8,686
Income before income taxes		2,639	3,042
Income tax expense		879	1,002
Net income from continuing operations		1,760	2,040
Net income attributable to noncontrolling interests		477	637
Net income attributable to the Company		1,283	1,403
Total assets		93,396	101,036
Assets under Management, Carrying Amount		9,838,000	10,730,000
Amortization of intangibles		650	739
Depreciation		73	70
Wealth Advisors Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net		3	2
Noninterest Income		12,742	12,707
Revenues		12,745	12,709
Noninterest Expense		9,694	9,132
Income before income taxes		3,051	3,577
Income tax expense		1,148	1,321
Net income from continuing operations		1,903	2,256
Net income attributable to noncontrolling interests		434	588
Net income attributable to the Company		1,469	1,668
Total assets		74,901	76,042
Assets under Management, Carrying Amount		9,857,000	10,012,000
Amortization of intangibles		191	246
Depreciation		215	211
Holding Company and Eliminations Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net		(548)	(926)
Noninterest Income		187	175
Revenues		(361)	(751)
Noninterest Expense		1,864	4,473
Income before income taxes		(2,225)	(5,224)
Income tax expense		(1,024)	(2,213)
Net income from continuing operations		(1,201)	(3,011)
Net income attributable to noncontrolling interests		0	4
Net income from discontinued operations	[3]	2,065	2,094
Net income attributable to the Company		864	(921)
Total assets		(89,258)	(74,917)
Assets under Management, Carrying Amount		(21,000)	(22,000)
Depreciation		$ 11	$ 31

[1] The Company presents its EPS based on the treasury stock method. The Company reverted to the treasury stock presentation from the two-class presentation due to the immaterial number of participating shares outstanding as of March 31, 2016. If the EPS presentation had been based on the two-class method, the following adjustments would have been made to the presentation of EPS for the three months ended March 31, 2016. Net income attributable to common shareholders would have been reduced by an additional $4 thousand, and the allocation of net income to participating securities would have been $6 thousand, reducing net income attributable to common shareholders by a total of $10 thousand. Basic EPS would not change. Weighted average diluted shared outstanding would have been reduced by 37,298 shares. Diluted EPS would not change.If the EPS presentation had been based on the two-class method, the following adjustments would have been made to the presentation of EPS for the three months ended March 31, 2015. Net income attributable to common shareholders would have been reduced by an additional $43 thousand, and the allocation of net income to participating securities would have been $60 thousand, reducing net income attributable to common shareholders by a total of $103 thousand. Basic EPS would not change. Weighted average diluted shared outstanding would have been reduced by 341,603 shares. Diluted EPS would not change.

[2] Operating expense for 2016 includes $1.1 million in restructuring expenses related to the Wealth Management and Trust segment. Operating expense for 2015 includes no restructuring expenses.

[3] Net income from discontinued operations for the three month periods ended March 31, 2016 and 2015 of $2.1 million in both periods is included in Holding Company and Eliminations in the calculation of net income attributable to the Company.