Reportable Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013		Jun. 30, 2014	Jun. 30, 2013		Dec. 31, 2013
Segment Reporting Information [Line Items]
Interest Income (Expense), Net	$ 46,268	$ 43,899		$ 90,790	$ 88,175
Noninterest Income	34,374	40,984		67,107	71,745
Revenues	80,642	84,883		157,897	159,920
Provision/ (credit) for loan losses	(5,000)	(2,000)		(6,200)	(2,000)
Noninterest Expense	54,402	56,666		109,370	113,252
Income before income taxes	31,240	30,217		54,727	48,668
Income tax expense	10,333	10,701		17,471	16,741
Net income from continuing operations	20,907	19,516		37,256	31,927
Net income attributable to noncontrolling interests	1,025	969		2,261	1,899
Net income attributable to the Company	21,332	21,328		38,373	34,531
Amortization of intangibles	1,045	1,101		2,098	2,219
Total assets	6,388,823	5,966,930		6,388,823	5,966,930		6,437,109
Assets under Management, Carrying Amount	25,370,000	21,771,000		25,370,000	21,771,000
Depreciation	1,519	1,632		3,190	3,153
Net income from discontinued operations	1,450	2,781		3,378	4,503
Gain on sale of Pacific Northwest offices	0	10,574		0	10,574
Private Banking Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net	47,236	44,998		92,641	90,367
Noninterest Income	10,515	19,608	[1]	20,186	29,498	[1]
Revenues	57,751	64,606		112,827	119,865
Provision/ (credit) for loan losses	(5,000)	(2,000)		(6,200)	(2,000)
Noninterest Expense	33,170	36,504		66,814	71,139
Income before income taxes	29,581	30,102		52,213	50,726
Income tax expense	10,426	10,885		18,105	17,709
Net income from continuing operations	19,155	19,217		34,108	33,017
Net income attributable to the Company	19,155	19,217		34,108	33,017
Amortization of intangibles	60	71		127	140
Total assets	6,203,436	5,783,621		6,203,436	5,783,621
Assets under Management, Carrying Amount	4,716,000	4,126,000		4,716,000	4,126,000
Depreciation	1,343	1,439		2,773	2,768
Wealth Advisors Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net	(32)	16		4	36
Noninterest Income	12,040	10,317		23,504	20,383
Revenues	12,008	10,333		23,508	20,419
Noninterest Expense	8,124	6,892		15,907	14,468
Income before income taxes	3,884	3,441		7,601	5,951
Income tax expense	1,509	1,304		2,901	2,181
Net income from continuing operations	2,375	2,137		4,700	3,770
Net income attributable to noncontrolling interests	486	448		1,045	912
Net income attributable to the Company	1,889	1,689		3,655	2,858
Amortization of intangibles	246	250		493	499
Total assets	74,203	68,404		74,203	68,404
Assets under Management, Carrying Amount	9,760,000	8,516,000		9,760,000	8,516,000
Depreciation	82	100		154	188
Investment Managers Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net	5	5		11	11
Noninterest Income	11,754	10,866		23,216	20,962
Revenues	11,759	10,871		23,227	20,973
Noninterest Expense	9,102	8,301		17,436	16,046
Income before income taxes	2,657	2,570		5,791	4,927
Income tax expense	877	842		1,924	1,615
Net income from continuing operations	1,780	1,728		3,867	3,312
Net income attributable to noncontrolling interests	540	521		1,175	987
Net income attributable to the Company	1,240	1,207		2,692	2,325
Amortization of intangibles	739	780		1,478	1,580
Total assets	101,626	100,791		101,626	100,791
Assets under Management, Carrying Amount	10,917,000	9,149,000		10,917,000	9,149,000
Depreciation	63	54		122	106
Holding Company and Eliminations Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net	(941)	(1,120)		(1,866)	(2,239)
Noninterest Income	65	193		201	902
Revenues	(876)	(927)		(1,665)	(1,337)
Noninterest Expense	4,006	4,969		9,213	11,599
Income before income taxes	(4,882)	(5,896)		(10,878)	(12,936)
Income tax expense	(2,479)	(2,330)		(5,459)	(4,764)
Net income from continuing operations	(2,403)	(3,566)		(5,419)	(8,172)
Net income attributable to noncontrolling interests	(1)	0		41	0
Net income attributable to the Company	(952)	(785)		(2,082)	(3,669)
Total assets	9,558	14,114		9,558	14,114
Assets under Management, Carrying Amount	(23,000)	(20,000)		(23,000)	(20,000)
Depreciation	31	39		141	91
Net income from discontinued operations	$ 1,450	$ 2,781		$ 3,378	$ 4,503

[1] Included in Private Bank fees and other income for the three and six months ended June 30, 2013 is the $10.6 million gain on sale of the three offices in the Pacific Northwest region.