Fair Value Measurements (Schedule Of Individual Assets And The Related Total Losses) (Details) (USD $) In Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2010		Dec. 31, 2010		Dec. 31, 2009
Losses on impaired loans	$ 18,815		$ 931		$ 61,562		$ 7,116		$ 91,009
Losses on loans held-for-sale	699				2,984		3,160		19,252
Losses on other real estate owned	875	[1]	2,086	[1]	2,164	[1]	20,139	[2]	28,216	[2]
Losses on investments in venture capital	77		14		322		760		1,982
Losses on equity investments							304
Total losses on assets	20,466		3,031		67,032		31,479		140,459
Commercial Loans [Member]
Losses on impaired loans	6,428		488		16,033		3,411		16,293
Construction- Residential [Member]
Losses on impaired loans	2,412				6,669		1,295		23,234
Construction- Other [Member]
Losses on impaired loans	1,306				16,749				12,493
Real Estate Loans [Member]
Losses on impaired loans	7,208		443		17,299		1,407		27,350
Land Loans [Member]
Losses on impaired loans	1,003				3,776		1,003		11,639
Residential Mortgage Loans [Member]
Losses on impaired loans	$ 458				$ 1,036

[1] Other real estate owned balance of $74.2 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.