LOANS AND LEASES (Non-Performing And Nonaccrual Loans and Leases) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Nonaccrual loans and leases [Abstract]
Non-accrual loans and leases	$ 121,353	$ 207,241	$ 219,738
Loans and leases 90 days or more past due, still accruing	1,479	1,210	1,442
Restructured loans and leases still accruing	21,502	25,099	26,147
Total non-performing loans and leases	144,334	233,550	247,327
Days past due of principal or interest at which loans and leases may be placed in non-accrual status	90 days
Commercial and industrial segment [Member]
Nonaccrual loans and leases [Abstract]
Non-accrual loans and leases	5,498	9,311	8,674
Loans and leases 90 days or more past due, still accruing	15	414
Real estate segment [Member] | Consumer mortgages [Member]
Nonaccrual loans and leases [Abstract]
Non-accrual loans and leases	30,569	36,133	35,599
Loans and leases 90 days or more past due, still accruing	1,178	512
Real estate segment [Member] | Home equity [Member]
Nonaccrual loans and leases [Abstract]
Non-accrual loans and leases	3,287	3,497	3,471
Real estate segment [Member] | Agricultural [Member]
Nonaccrual loans and leases [Abstract]
Non-accrual loans and leases	4,086	7,587	7,190
Loans and leases 90 days or more past due, still accruing		10
Real estate segment [Member] | Commercial and industrial-owner occupied [Member]
Nonaccrual loans and leases [Abstract]
Non-accrual loans and leases	18,138	20,910	27,059
Loans and leases 90 days or more past due, still accruing		19
Real estate segment [Member] | Construction, acquisition and development [Member]
Nonaccrual loans and leases [Abstract]
Non-accrual loans and leases	26,127	66,635	92,351
Real estate segment [Member] | Commercial real estate [Member]
Nonaccrual loans and leases [Abstract]
Non-accrual loans and leases	31,468	57,656	40,514
Credit cards segment [Member]
Nonaccrual loans and leases [Abstract]
Non-accrual loans and leases	196	415	465
Loans and leases 90 days or more past due, still accruing	263	228
All other [Member]
Nonaccrual loans and leases [Abstract]
Non-accrual loans and leases	1,984	5,097	4,415
Loans and leases 90 days or more past due, still accruing	$ 23	$ 27