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	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Mortgage Servicing Rights [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 51,296	$ 54,662
Net income	$ (8,167)	(12,244)
Other comprehensive income
Purchases, sales, issuances and settlements, net	$ (14,139)	8,878
Transfers in and/or out of Level 3
Ending Balance	$ 57,268	51,296
Net unrealized (losses) gains included in net income for the year relating to assets and liabilities held	(1,161)	(6,444)
Derivative Instruments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	623	878
Net income	$ 2,634	(255)
Other comprehensive income
Purchases, sales, issuances and settlements, net
Transfers in and/or out of Level 3
Ending Balance	$ 3,257	623
Net unrealized (losses) gains included in net income for the year relating to assets and liabilities held	$ 2,634	$ (255)
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