BORROWINGS (Details 4) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Repurchase Agreement Counteryparty [Line Items]
Repurchase Agreements, Amount	$ 203,356	$ 216,128
Repurchase Agreements, Investments Pledged	222,096	217,897
Broker [Member]
Repurchase Agreement Counteryparty [Line Items]
Repurchase Agreements, Amount	50,000	50,000
Repurchase Agreements, Investments Pledged	49,693	51,574
Customer [Member]
Repurchase Agreement Counteryparty [Line Items]
Repurchase Agreements, Amount	153,356	166,128
Repurchase Agreements, Investments Pledged	$ 172,403	$ 166,323