DUE TO DEPOSITORS (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Deposits [Abstract]
Savings accounts	$ 371,792		$ 353,708
Certificates of deposit ("CDs")	891,975		977,551
Money market accounts	961,359		772,055
Interest bearing checking accounts	95,159		99,308
Non-interest bearing checking accounts	159,144		141,079
Total deposits	2,479,429		2,343,701
Weighted Average Rate Domestic Deposit Liabilities [Abstract]
Savings accounts (in hundredths)	0.15%		0.21%
Certificates of deposit ("CDs") (in hundredths)	1.68%		1.85%
Money market accounts (in hundredths)	0.57%		0.63%
Interest bearing checking accounts (in hundredths)	0.16%		0.23%
Effective cost on noninterest bearing accounts (in hundredths)	0.00%		0.00%
TOTAL	0.86%		1.02%
Maturities of Time Deposits [Abstract]
2013	525,628
2014	148,544
2015	98,665
2016	30,445
2017	41,720
2018 and beyond	46,973
TOTAL	891,975
Weighted Average Rate of Time Deposits [Abstract]
2013	1.14%
2014	2.35%
2015	2.49%
2016	2.24%
2017	2.34%
2018 and beyond	2.67%
TOTAL	1.66%	[1]
Aggregate amount of CDs $100,000 or More	$ 371,697		$ 401,463

[1] (1) The weighted average cost of CDs, inclusive of their contractual compounding of interest, was 1.68% at December 31, 2012.