LIMITS ON DIVIDENDS AND OTHER REVENUE SOURCES (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
LIMITS ON DIVIDENDS AND OTHER REVENUE SOURCES [Abstract]
Criteria for the bank to seek approval of the Office of the Comptroller of the Currency (OCC) for the payments dividends	The Company's ability to pay dividends to its shareholders is largely dependent on the Bank's ability to pay dividends to the Company. In addition to state law requirements and the capital requirements discussed below, the circumstances under which the Bank may pay dividends are limited by federal statutes, regulations, and policies. For example, as a national bank, the Bank must obtain the approval of the Office of the Comptroller of the Currency OCC for payments of dividends if the total of all dividends declared in any calendar year would exceed the total of the Bank's net profits, as defined by applicable regulations, for that year, combined with its retained net profits for the preceding two years.
Undivided profits legally available for the payments of dividends	$ 92
Statutory restrictions on the company's banking subsidiary to transfer funds	Such transfer by the Bank to the Company generally is limited in amount to 10% of the Bank's capital and surplus, or 20% in the aggregate. Furthermore, such loans and extensions of credit are required to be collateralized in specific amounts.
Percentage of Bank's capital and surplus that can be transferred to Company, maximum (in hundredths)	10.00%
Aggregate percentage of Bank's capital and surplus that can be transferred to Company, maximum (in hundredths)	20.00%