Loans (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2011	Dec. 31, 2010
Unearned income on loans	$ 45,019	$ 42,183
Commercial real estate loans	2,353,519	2,115,492
Commercial construction loans	225,614	202,018
Unimproved Residential Land [Member] \| Florida [Member]
Percent of commercial loan portfolio	7.90%
Unimproved Commercial Land [Member] \| Florida [Member]
Percent of commercial loan portfolio	18.50%
Improved Land [Member] \| Florida [Member]
Percent of commercial loan portfolio	3.20%
Commercial Real Estate [Member]
Percent of loan portfolio	35.10%	34.70%
Income Producing Commercial Real Estate [Member] \| Florida [Member]
Percent of commercial loan portfolio	50.80%
Residential Construction [Member] \| Florida [Member]
Percent of commercial loan portfolio	6.20%
Commercial Construction [Member]
Percent of loan portfolio	3.40%	3.30%
Commercial Construction [Member] \| Florida [Member]
Percent of commercial loan portfolio	12.10%
Owner-Occupied [Member]
Percent of commercial real estate loans	49.00%
Owner-Occupied [Member] \| Florida [Member]
Percent of commercial loan portfolio	1.30%
Non-Owner-Occupied [Member]
Percent of commercial real estate loans	51.00%
Consumer Finance [Member]
Consumer loans	163,150	162,805
Percent of loan portfolio	2.40%	2.70%
Florida [Member]
Commercial loans	$ 180,232	$ 195,281
Percent of loan portfolio	2.70%	3.20%
Weighted average loan-to-value ratio	81.70%

Reflects the sum of the gross carrying amounts of the various categories of unpaid commercial loans and leases receivable, primarily issued to businesses. Includes: (1) commercial and industrial loans, consisting of general purpose loans to entities involved in producing, transporting, or merchandising products sold in the course of commerce; (2) agricultural loans consisting of borrowings used to finance major equipment and machinery purchases and expenses, livestock or crop production (including fisheries), and to supplement working capital needs of an entity engaged in farming operations; (3) mortgage loans secured by a [legal] security interest in real property [commercial building or business real property]; (4) obligation in the form of [promissory] notes, used for the funding of construction projects; (5) interbank and other loans to financial institutions for the purpose of liquidity management on the part of the borrower; (6) draws against credit facilities provided to companies involved in mortgage banking activities (warehousing); (7) amounts lent to businesses engaged in international activities (trade financing); (8) lease financings; and (9) loans to governmental entities.

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Reflects the cumulative amount of interest and fees paid by borrowers which have not yet been taken into income in conformity with GAAP. Also reflects the amount of unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans that are being amortized into income as an adjustment to yield.

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