Fair Value Measurements (Schedule Of Level Of Valuation Assumptions Used To Determine Each Adjustment And The Carrying Value Of The Related Individual Assets And The Total Losses On A Nonrecurring Basis) (Details) (USD $)	Sep. 30, 2011		Dec. 31, 2010
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans	$ 65,119,000		$ 111,022,000
Loans held-for-sale	1,276,000		2,873,000
Other real estate owned	72,516,000	[1]	83,264,000	[2]
Investments in venture capital	8,636,000		8,410,000
Equity investments	323,000		522,000
Total assets	147,870,000		206,091,000
Other real estate owned net of disposal costs	94,300,000		77,700,000
Commercial Loans [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans	16,609,000		4,824,000
Commercial Loans [Member] | Fair Value Measurements, Level 1 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans
Commercial Loans [Member] | Fair Value Measurements, Level 2 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans
Commercial Loans [Member] | Fair Value Measurements, Level 3 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans	16,609,000		4,824,000
Construction Loans- Residential [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans			500,000
Construction Loans- Residential [Member] | Fair Value Measurements, Level 1 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans
Construction Loans- Residential [Member] | Fair Value Measurements, Level 2 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans
Construction Loans- Residential [Member] | Fair Value Measurements, Level 3 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans			500,000
Construction Loans- Other [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans			5,659,000
Construction Loans- Other [Member] | Fair Value Measurements, Level 1 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans
Construction Loans- Other [Member] | Fair Value Measurements, Level 2 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans
Construction Loans- Other [Member] | Fair Value Measurements, Level 3 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans			5,659,000
Real Estate Loans [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans	37,387,000		99,309,000
Real Estate Loans [Member] | Fair Value Measurements, Level 1 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans
Real Estate Loans [Member] | Fair Value Measurements, Level 3 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans	37,387,000		99,309,000
Land Loans [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans	904,000		730,000
Land Loans [Member] | Fair Value Measurements, Level 1 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans
Land Loans [Member] | Fair Value Measurements, Level 2 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans
Land Loans [Member] | Fair Value Measurements, Level 3 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans	904,000		730,000
Residential Mortgage Loans [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans	10,219,000
Residential Mortgage Loans [Member] | Fair Value Measurements, Level 3 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans	10,219,000
Fair Value Measurements, Level 1 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans
Loans held-for-sale
Other real estate owned				[2]
Investments in venture capital
Equity investments	323,000		522,000
Total assets	323,000		522,000
Fair Value Measurements, Level 2 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans
Loans held-for-sale
Other real estate owned	71,462,000	[1]	72,159,000	[2]
Investments in venture capital
Equity investments
Total assets	71,462,000		72,159,000
Fair Value Measurements, Level 3 [Member]
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total impaired loans	65,119,000		111,022,000
Loans held-for-sale	1,276,000		2,873,000
Other real estate owned	1,054,000	[1]	11,105,000	[2]
Investments in venture capital	8,636,000		8,410,000
Equity investments
Total assets	$ 76,085,000		$ 133,410,000

[1] Other real estate owned balance of $94.3 million in the consolidated balance sheet is net of estimated disposal costs.

[2] Other real estate owned balance of $77.7 million in the consolidated balance sheet is net of estimated disposal costs.