OTHER NONINTEREST INCOME AND EXPENSE (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Other noninterest revenue [Abstract]
Annuity fees	$ 2,243	$ 3,323	$ 2,474
Brokerage commissions and fees	6,714	5,918	5,512
Bank-owned life insurance	8,074	7,662	7,737
Other miscellaneous income	15,124	16,599	14,433
Total other noninterest income	32,155	33,502	30,156
Other noninterest income [Abstract]
Advertising	4,869	5,098	5,354
Foreclosed property expense	39,406	27,796	18,355
Telecommunications	8,515	8,386	9,466
Public relations	5,434	5,727	6,088
Data processing	10,234	9,677	6,068
Computer software	7,476	7,502	7,334
Amortization of intangibles	3,222	3,324	3,909
Legal fees	9,334	9,170	6,102
Postage and shipping	4,465	4,812	5,044
Other miscellaneous expense	72,147	74,098	62,760
Total other noninterest expense	$ 165,102	$ 155,590	$ 130,480