EMPLOYEE BENEFIT PLANS (Tables)

3 Months Ended

Mar. 31, 2018

Compensation and Retirement Disclosure [Abstract]

Schedule of expected benefit payments related to the defined benefit pension plan

	Three Months Ended March 31,
(Dollars in Thousands)	2018		2017
Service Cost	$	1,721	$	1,688
Interest Cost		1,415		1,437
Expected Return on Plan Assets		(2,391)		(2,006)
Prior Service Cost Amortization		50		56
Net Loss Amortization		918		953
Net Periodic Benefit Cost	$	1,713	$	2,128
Discount Rate Used for Benefit Cost		3.71%		4.21%
Long-term Rate of Return on Assets		7.25%		7.25%

Schedule of expected benefit payments related to the SERP

The components of the net periodic benefit cost for the Company's SERP were as follows:
	Three Months Ended March 31,
(Dollars in Thousands)	2018		2017
Interest Cost	$	57	$	48
Net Loss Amortization		406		149
Net Periodic Benefit Cost	$	463	$	197
Discount Rate Used for Benefit Cost		3.53%		3.92%