LOANS AND LEASES, Troubled Debt Restructurings (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2011
Financial effects of TDRs [Abstract]
Number of Contracts	9	95
Pre-Modification Outstanding Recorded Investment	$ 5,346	$ 44,981
Post-Modification Outstanding Recorded Investment	5,318	37,015
TDRs modified for which there was a payment default [Abstract]
Minimum period past due at which a payment default is assessed (in days)		30D
Number of Contracts	2	32
Recorded Investment	320	11,849
Commercial and industrial segment [Member]
Financial effects of TDRs [Abstract]
Number of Contracts	1	4
Pre-Modification Outstanding Recorded Investment	771	2,517
Post-Modification Outstanding Recorded Investment	759	2,343
TDRs modified for which there was a payment default [Abstract]
Number of Contracts		2
Recorded Investment		1,466
Consumer mortgages [Member] | Real estate segment [Member]
Financial effects of TDRs [Abstract]
Number of Contracts	4	19
Pre-Modification Outstanding Recorded Investment	2,222	4,543
Post-Modification Outstanding Recorded Investment	2,222	4,467
TDRs modified for which there was a payment default [Abstract]
Number of Contracts	1	2
Recorded Investment	80	184
Agricultural [Member] | Real estate segment [Member]
Financial effects of TDRs [Abstract]
Number of Contracts	1	4
Pre-Modification Outstanding Recorded Investment	240	2,650
Post-Modification Outstanding Recorded Investment	240	1,483
TDRs modified for which there was a payment default [Abstract]
Number of Contracts	1	3
Recorded Investment	240	1,381
Commercial and industrial-owner occupied [Member] | Real estate segment [Member]
Financial effects of TDRs [Abstract]
Number of Contracts	3	16
Pre-Modification Outstanding Recorded Investment	2,113	7,773
Post-Modification Outstanding Recorded Investment	2,097	7,496
TDRs modified for which there was a payment default [Abstract]
Number of Contracts		5
Recorded Investment		1,286
Construction, acquisition and development [Member] | Real estate segment [Member]
Financial effects of TDRs [Abstract]
Number of Contracts		33
Pre-Modification Outstanding Recorded Investment		17,411
Post-Modification Outstanding Recorded Investment		12,272
TDRs modified for which there was a payment default [Abstract]
Number of Contracts		18
Recorded Investment		4,997
Commercial [Member] | Real estate segment [Member]
Financial effects of TDRs [Abstract]
Number of Contracts		13
Pre-Modification Outstanding Recorded Investment		7,158
Post-Modification Outstanding Recorded Investment		6,565
TDRs modified for which there was a payment default [Abstract]
Number of Contracts		2
Recorded Investment		2,535
All other receivables [Member]
Financial effects of TDRs [Abstract]
Number of Contracts		6
Pre-Modification Outstanding Recorded Investment		2,929
Post-Modification Outstanding Recorded Investment		$ 2,389