BUSINESS COMBINATIONS (Details 5) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Schedule Of Covered Loans Acquired Accretable Discounts [Line Items]
Accretion	$ (10,071)	$ (8,055)
Non Covered Loan [Member]
Schedule Of Covered Loans Acquired Accretable Discounts [Line Items]
Balance, beginning of year	771,554	674,239	$ 674,239
Additions due to acquisitions	402,942	195,818	195,818
Transfer from covered loans due to loss-share expiration	45,908	15,462	50,568
Balance, ending of year	1,067,090	767,494	771,554
Discount Accretion [Member] | Non Covered Loan [Member]
Schedule Of Covered Loans Acquired Accretable Discounts [Line Items]
Balance, beginning of year	24,785	25,716	25,716
Additions due to acquisitions	9,991	4,686	5,788
Accretion	(10,071)	(8,055)	(10,590)
Transfer from covered loans due to loss-share expiration	3,457	0	1,665
Accretable discounts removed due to charge-offs	(161)	(1,686)	(1,768)
Transfers between non-accretable and accretable discounts, net	2,263	(106)	3,974
Balance, ending of year	$ 30,264	$ 20,555	$ 24,785