Annual report pursuant to Section 13 and 15(d)

INCOME TAXES (Schedule of Income Tax Expense, Difference in Income Tax Rate to Pretax Income) (Details)

v2.4.1.9
INCOME TAXES (Schedule of Income Tax Expense, Difference in Income Tax Rate to Pretax Income) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
INCOME TAXES [Abstract]      
Computed "expected" tax expense $ 24,484us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate $ 16,453us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate $ 17,411us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Tax-exempt interest income, net (5,181)us-gaap_IncomeTaxReconciliationTaxExemptIncome (3,308)us-gaap_IncomeTaxReconciliationTaxExemptIncome (2,614)us-gaap_IncomeTaxReconciliationTaxExemptIncome
Other, net (1,941)us-gaap_IncomeTaxReconciliationOtherReconcilingItems (632)us-gaap_IncomeTaxReconciliationOtherReconcilingItems (464)us-gaap_IncomeTaxReconciliationOtherReconcilingItems
Income tax expense $ 17,362us-gaap_IncomeTaxExpenseBenefit $ 12,513us-gaap_IncomeTaxExpenseBenefit $ 14,333us-gaap_IncomeTaxExpenseBenefit