CUSTOMER DEPOSIT ACCOUNTS (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CUSTOMER DEPOSIT ACCOUNTS
Accrued interest payable	$ 4,700,000	$ 7,100,000
Interest expense on customer deposits by account type
Interest-bearing checking	3,163,000	3,009,000	2,349,000
Money market accounts	16,984,000	20,610,000	29,514,000
Savings deposits	2,795,000	2,988,000	3,986,000
Time deposits:
Less than $100,000	20,655,000	29,329,000	34,958,000
$100,000 or greater	32,298,000	51,174,000	45,930,000
Total	75,895,000	107,110,000	116,737,000
Time deposits within the Certificate of Deposit Account Registry Service (CDARS) program	$ 260,500,000	$ 580,900,000