GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Mortgage Servicing Rights) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Servicing Asset at Amortized Value, Balance [Roll Forward]
Additions—acquired through business combinations		$ 0	$ 0	$ 2,172	$ 0
Valuation adjustments in the period				0	0
Mortgage Servicing Rights [Member]
Morgage Servicing Rights at Amortized Value [Line Items]
Loans Serviced For Others		2,176,000		2,176,000		$ 1,391,000
Custodial Accounts		14,500		14,500		$ 6,700
Servicing Asset at Amortized Value, Balance [Roll Forward]
Balance, net of valuation allowance, beginning of the period		11,709	8,199	9,030	8,086
Additions—amounts capitalized		1,476	794	2,692	1,369
Amortization	[1]	(856)	(512)	(1,565)	(974)
Valuation adjustments in the period		0	0	0	0
Balance, net of valuation allowance, end of the period	[2]	12,329	$ 8,481	12,329	$ 8,481
Valuation allowance, end of period	[2]	$ 0		$ 0

[1] Amortization of mortgage servicing rights is recorded as a reduction of loan servicing income and any unamortized balance is fully written off if the loan repays in full.

[2] There was no valuation allowance as of June 30, 2015 and 2014.