Reportable Segments (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Interest Income (Expense), Net		$ 57,383	$ 53,642
Noninterest Income		39,743	36,506
Revenues		97,126	90,148
Provision/ (credit) for loan losses		(1,795)	(181)
Noninterest Expense		70,857	68,780
Income before income taxes		28,064	21,549
Income tax expense		6,026	6,553
Net income from continuing operations		22,038	14,996
Net income attributable to noncontrolling interests		1,050	966
Net income from discontinued operations		1,698	1,632
Net income attributable to the Company		22,686	15,662
Total assets		8,318,359	8,215,120	$ 8,311,744
Amortization of intangibles		750	1,426
Depreciation		2,102	2,000
Private Banking Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net		58,131	54,256
Noninterest Income		2,475	1,828
Revenues		60,606	56,084
Provision/ (credit) for loan losses		(1,795)	(181)
Noninterest Expense		39,627	35,058
Income before income taxes		22,774	21,207
Income tax expense		4,613	6,269
Net income from continuing operations		18,161	14,938
Net income attributable to the Company		18,161	14,938
Total assets		8,185,803	8,058,121
Depreciation		1,584	1,371
Wealth Management and Trust Segment [Member]
Segment Reporting Information [Line Items]
Noninterest Income		12,274	10,921
Noninterest Expense		10,694	13,873
Income before income taxes		1,580	(2,952)
Income tax expense		475	(1,166)
Net income from continuing operations		1,105	(1,786)
Net income attributable to the Company		1,105	(1,786)
Total assets		71,560	74,408
Amortization of intangibles		701	727
Depreciation		321	337
Investment Managers Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net	[1]	4	4
Noninterest Income	[1]	11,408	10,859
Revenues	[1]	11,412	10,863
Noninterest Expense	[1]	8,525	8,354
Income before income taxes	[1]	2,887	2,509
Income tax expense	[1]	671	844
Net income from continuing operations	[1]	2,216	1,665
Net income attributable to noncontrolling interests	[1]	488	462
Net income attributable to the Company	[1]	1,728	1,203
Total assets	[1]	66,996	92,255
Amortization of intangibles	[1]	0	650
Depreciation	[1]	34	66
Wealth Advisors Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net		48	17
Noninterest Income		13,539	12,843
Revenues		13,587	12,860
Noninterest Expense		10,536	9,443
Income before income taxes		3,051	3,417
Income tax expense		786	1,287
Net income from continuing operations		2,265	2,130
Net income attributable to noncontrolling interests		562	504
Net income attributable to the Company		1,703	1,626
Total assets		73,054	73,182
Amortization of intangibles		49	49
Depreciation		163	226
Holding Company and Eliminations Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net		(800)	(635)
Noninterest Income		47	55
Revenues		(753)	(580)
Noninterest Expense		1,475	2,052
Income before income taxes		(2,228)	(2,632)
Income tax expense		(519)	(681)
Net income from continuing operations		(1,709)	(1,951)
Net income from discontinued operations		1,698	1,632
Net income attributable to the Company		(11)	(319)
Total assets		$ (79,054)	$ (82,846)

[1] Results for the Investment Management Segment for the three months ended March 31, 2018 and 2017 include results for DGHM and Anchor. Assets for the Investment Management Segment at March 31, 2018 and 2017 include assets of DGHM and Anchor; however, Anchor’s assets and liabilities are classified as held for sale at March 31, 2018.