PARENT ONLY CONDENSED FINANCIAL STATEMENTS (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Expenses
Interest expense									$ 14,686	$ 21,763	$ 33,319
Salaries and benefits									48,990	49,950	50,138
Income before income tax									33,285	27,551	15,041
Income tax (benefit)									6,027	3,738	239
Net income	7,279	6,986	6,982	6,011	6,026	5,615	7,626	4,546	27,258	23,813	14,802
Parent Company
Income
Dividends from subsidiaries									47,800	2,825	1,119
Fees from subsidiaries									19,024	19,624	17,669
Other Income									(845)	176	233
Total income									65,979	22,625	19,021
Expenses
Interest expense									1,825	1,737	1,755
Salaries and benefits									11,238	11,388	11,062
Professional fees									1,465	2,534	1,275
Other expenses									13,655	13,173	12,223
Total expenses									28,183	28,832	26,315
Income before income tax									37,796	(6,207)	(7,294)
Income tax (benefit)									(3,377)	(3,069)	(2,989)
Income (loss) before equity in undistributed income of subsidiaries									41,173	(3,138)	(4,305)
Equity in undistributed income (loss) of subsidiaries									(13,915)	26,951	19,107
Net income									$ 27,258	$ 23,813	$ 14,802