COMMITMENTS AND CONTINGENCIES (Details) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended	12 Months Ended		9 Months Ended			3 Months Ended
	Dec. 11, 2012 item	Sep. 30, 2013	Mar. 31, 2014	Dec. 31, 2013	Sep. 23, 2011	Mar. 31, 2014 Capital Source Merger-Related Litigation item	Mar. 31, 2014 Capital Source Merger-Related Litigation California item	Mar. 31, 2014 Capital Source Merger-Related Litigation Delaware item	Mar. 31, 2014 Standby letters of credit	Dec. 31, 2013 Standby letters of credit
COMMITMENTS AND CONTINGENCIES
Loan commitments to extend credit			$ 1,010,073,000	$ 1,001,740,000
Commitments and contingencies
Credit commitments									35,125,000	39,200,000
Expiration period of guarantees									1 year
Number of lawsuits	14					11	5	6
Commitments to purchase equipment being acquired for lease to others			17,262,000	8,475,000
Commitments to extend credit			1,062,460,000	1,049,415,000
Commitment to contribute capital to miscellaneous investments			16,800,000	11,000,000
Interpleader amounts on deposit			99,884.79		2,539,049
Amount of claim awarded against defender		$ 9,700,000