NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Net interest income	$ 45,493us-gaap_InterestIncomeExpenseNet	$ 42,766us-gaap_InterestIncomeExpenseNet
Provision for loan losses	3,851us-gaap_ProvisionForLoanAndLeaseLosses	3,396us-gaap_ProvisionForLoanAndLeaseLosses
Net interest income after provision for loan losses	$ 41,642	$ 39,370

Amount of expense related to estimated loss from loan and lease transactions.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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