Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 segment	Mar. 31, 2012	Dec. 31, 2012
Segment Reporting [Abstract]
Number of Primary Operating Segments	2
Number of Reportable Segments	2
Segment Reporting Information [Line Items]
Goodwill	$ 30,334		$ 30,334
Intangibles, net	6,973		7,406
Deposits	2,494,789		2,658,851
Total assets	3,123,928		3,325,786
Income Statement Information
Net interest income (expense)	36,899	30,629
Provision for loan losses	4,109	4,003
Noninterest Income	2,914	3,983
Noninterest Expense	20,517	21,364
Income before income tax expense	15,187	9,245
Banking
Segment Reporting Information [Line Items]
Total assets	3,005,483		3,195,096
Income Statement Information
Net interest income (expense)	37,857	31,811
Provision for loan losses	4,109	4,003
Noninterest Income	45	1,892
Noninterest Expense	16,768	18,059
Income before income tax expense	17,025	11,641
Wealth Management
Segment Reporting Information [Line Items]
Total assets	102,194		112,020
Income Statement Information
Net interest income (expense)	7	(128)
Provision for loan losses	0	0
Noninterest Income	2,794	2,053
Noninterest Expense	2,056	1,873
Income before income tax expense	745	52
Corporate and Intercompany
Segment Reporting Information [Line Items]
Total assets	16,251		18,670
Income Statement Information
Net interest income (expense)	(965)	(1,054)
Provision for loan losses	0	0
Noninterest Income	75	38
Noninterest Expense	1,693	1,432
Income before income tax expense	$ (2,583)	$ (2,448)