FAIR VALUE DISCLOSURES (Changes in Level Three Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Mortgage Servicing Rights [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 54,662	$ 37,882
Net income	(12,244)	2,690
Other comprehensive income
Purchases, sales, issuances and settlements, net	(8,878)	14,090
Transfers in and/or out of Level 3
Ending Balance	51,296	54,662
Net unrealized (losses) gains included in net income for the year relating to assets and liabilities held	(6,444)	8,943
Derivative Instruments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	878	2,911
Net income	(255)	(2,033)
Other comprehensive income
Purchases, sales, issuances and settlements, net
Transfers in and/or out of Level 3
Ending Balance	623	878
Net unrealized (losses) gains included in net income for the year relating to assets and liabilities held	(255)	(2,033)
Available-for-sale Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance
Net income
Other comprehensive income
Purchases, sales, issuances and settlements, net
Transfers in and/or out of Level 3
Ending Balance
Net unrealized (losses) gains included in net income for the year relating to assets and liabilities held