OPERATING SEGMENTS (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 item	Sep. 30, 2011
OPERATING SEGMENTS
Number of reportable operating segments			2
Operating segments
Net interest income (expense)	$ 35,225,000	$ 31,038,000	$ 101,423,000	$ 75,385,000
Provision for loan losses	2,500,000	2,200,000	6,750,000	5,300,000
Non-interest income	14,313,000	10,674,000	36,403,000	26,978,000
Non-interest expense	32,162,000	34,710,000	96,540,000	86,522,000
Income from continuing operations before income taxes	14,876,000	4,802,000	34,536,000	10,541,000
Income tax expense (benefit)	4,847,000	405,000	10,040,000	1,432,000
Net income from continuing operations	10,029,000	4,397,000	24,496,000	9,109,000
Income from discontinued operations before income taxes (including gain on disposal of $63)		(8,000)	(261,000)	(8,000)
Income tax expense		(3,000)	376,000	(3,000)
Net loss from discontinued operations		(5,000)	(637,000)	(5,000)
Net income	10,029,000	4,392,000	23,859,000	9,104,000
Average assets	4,572,000,000	3,861,000,000	4,302,000,000	3,315,000,000
Banking
Operating segments
Net interest income (expense)	35,505,000	31,253,000	102,095,000	76,017,000
Provision for loan losses	2,500,000	2,200,000	6,750,000	5,300,000
Non-interest income	11,571,000	8,248,000	28,147,000	18,035,000
Non-interest expense	29,608,000	34,163,000	88,061,000	76,893,000
Income from continuing operations before income taxes	14,968,000	3,138,000	35,431,000	11,859,000
Income tax expense (benefit)	5,105,000	(272,000)	10,400,000	1,968,000
Net income from continuing operations			25,031,000
Income from discontinued operations before income taxes (including gain on disposal of $63)			(261,000)
Income tax expense			376,000
Net loss from discontinued operations			(637,000)
Net income	9,863,000	3,410,000	24,394,000	9,891,000
Average assets	4,409,000,000	3,827,000,000	4,185,000,000	3,281,000,000
Insurance
Operating segments
Non-interest income	2,742,000	2,426,000	8,256,000	8,938,000
Non-interest expense	2,021,000	2,148,000	6,329,000	6,598,000
Income from continuing operations before income taxes	721,000	278,000	1,927,000	2,340,000
Income tax expense (benefit)	290,000	114,000	775,000	958,000
Net income from continuing operations			1,152,000
Net income	431,000	164,000	1,152,000	1,382,000
Average assets	29,000,000	30,000,000	30,000,000	32,000,000
Parent
Operating segments
Net interest income (expense)	(280,000)	(215,000)	(672,000)	(631,000)
Non-interest income	10,294,000	3,570,000	25,546,000	7,068,000
Non-interest expense	533,000	(1,602,000)	2,150,000	3,031,000
Income from continuing operations before income taxes	9,481,000	4,957,000	22,724,000	3,406,000
Income tax expense (benefit)	(548,000)	569,000	(1,135,000)	(1,494,000)
Net income from continuing operations			23,859,000
Net income	10,029,000	4,388,000	23,859,000	4,900,000
Average assets	501,000,000	479,000,000	492,000,000	413,000,000
Eliminations
Operating segments
Net interest income (expense)				(1,000)
Non-interest income	(10,294,000)	(3,570,000)	(25,546,000)	(7,068,000)
Non-interest expense		1,000
Income from continuing operations before income taxes	(10,294,000)	(3,571,000)	(25,546,000)	(7,069,000)
Income tax expense (benefit)		(1,000)
Net income from continuing operations			(25,546,000)
Net income	(10,294,000)	(3,570,000)	(25,546,000)	(7,069,000)
Average assets	$ (368,000,000)	$ (475,000,000)	$ (405,000,000)	$ (411,000,000)