DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Effect of Derivative Instruments on Statement of Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Economic undesignated hedges:
Total gain (loss) on derivatives	$ 1,067	$ (1,761)	$ (1,217)
Interest Income Loans [Member] | Interest Rate Swap [Member]
Economic undesignated hedges:
Total gain (loss) on derivatives	901	(1,548)	(92)
Interest Income Loans [Member] | Interest Rate Cap [Member]
Economic undesignated hedges:
Total gain (loss) on derivatives	0	0	(38)
Interest Income Investments [Member] | Interest Rate Cap [Member]
Economic undesignated hedges:
Total gain (loss) on derivatives	0	0	(1,136)
Interest Expense Deposits [Member] | Interest Bearing Deposit [Member]
Economic undesignated hedges:
Total gain (loss) on derivatives	0	0	(2)
Interest Expense Notes Payable [Member] | Embedded Written And Purchased Options On Stock Index Notes Payable [Member]
Economic undesignated hedges:
Total gain (loss) on derivatives	0	(45)	51
Mortgage Banking Activities [Member] | Forward Contracts [Member]
Economic undesignated hedges:
Total gain (loss) on derivatives	$ 166	$ (168)	$ 0