PARENT COMPANY ONLY FINANCIAL INFORMATION (Textual) (Details) (USD $)	12 Months Ended				12 Months Ended				1 Months Ended	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Aug. 10, 2009	Dec. 31, 2013 Parent Company [Member]	Dec. 31, 2012 Parent Company [Member]	Dec. 31, 2011 Parent Company [Member]	Mar. 20, 2013 Revolving Credit Facility [Member] Investors Of America Limited Partnership [Member] Parent Company [Member]	Feb. 10, 2014 Subsequent Event [Member] Parent Company [Member]	Mar. 14, 2014 Junior Subordinated Debt [Member] Subsequent Event [Member]
Entity Information [Line Items]
Cash and due from banks	$ 92,369,000	$ 114,841,000			$ 1,864,000	$ 2,744,000
Line of credit facility, maximum borrowing capacity								5,000,000
Trust preferred securities value				345,000,000
Cash Dividends Paid to First Banks, Inc. by First Bank									70,000,000
Deferred interest paid by First Banks, Inc. on the junior subordinated debentures to the respective trustees for further distribution to the trust preferred securities holders on the interest payment dates in March and April 2014	$ 9,540,000	$ 17,493,000	$ 35,723,000		$ 0	$ 0	$ 0			$ 66,400,000