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	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Mortgage Servicing Rights [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 37,882	$ 30,174
Net income (loss)	2,839	(3,608)
Purchases, sales, issuances and settlements, net	8,280	7,601
Ending Balance	49,001	34,167
Net unrealized (losses) gains included in net income for the quarter relating to assets and liabilities held	5,252	(3,837)
Derivative Instruments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	2,911	342
Net income (loss)	3,952	2,480
Ending Balance	6,863	2,822
Net unrealized (losses) gains included in net income for the quarter relating to assets and liabilities held	4,722	973
Available-for-sale Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance
Net income (loss)
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 quarter relating to assets and liabilities held