Quarterly report pursuant to Section 13 or 15(d)

EMPLOYEE BENEFIT PLANS (Details)

v3.7.0.1
EMPLOYEE BENEFIT PLANS (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Defined Benefit Pension Plan [Member]    
Components of Net Periodic Benefit Costs:    
Service Cost $ 1,688 $ 1,613
Interest Cost 1,437 1,397
Expected Return on Plan Assets (2,006) (1,934)
Prior Service Cost Amortization 56 69
Net Gain (Loss) Amortization 953 801
Net Periodic Benefit Cost (Income) $ 2,128 $ 1,946
Discount Rate (in percent) 4.21% 4.52%
Long-Term Rate of Return on Assets (in percent) 7.25% 7.50%
Supplemental Executive Retirement Plan [Member]    
Components of Net Periodic Benefit Costs:    
Service Cost $ 0 $ 0
Interest Cost 48 40
Expected Return on Plan Assets 0 0
Prior Service Cost Amortization 0 0
Net Gain (Loss) Amortization 149 190
Net Periodic Benefit Cost (Income) $ 197 $ 230
Discount Rate (in percent) 3.92% 4.13%