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SUBSEQUENT EVENT (Notes)	12 Months Ended
SUBSEQUENT EVENT (Notes)	Dec. 31, 2012
Subsequent Events [Abstract]
Subsequent Event	SUBSEQUENT EVENT During the first quarter of 2013, BancShares executed an agreement to sell and assign its rights and most of its obligations under various service agreements with certain client banks, some of which are Related Persons, to a third party. The transaction will result in the elimination of several positions that supported the affected functions as well as certain investments in software and equipment. A pre-tax gain of approximately $5.0 million (unaudited) is expected to be recognized during the first quarter of 2013.