Quarterly report pursuant to Section 13 or 15(d)

BENEFIT PLANS - Net Periodic Benefit Cost (Details)

v3.4.0.3
BENEFIT PLANS - Net Periodic Benefit Cost (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Pension Benefits    
Components of net periodic benefit expense [Abstract]    
Service cost $ 1,025 $ 457
Interest cost 6,748 7,985
Expected return on plan assets (10,223) (11,043)
Amortization of prior service cost 0 0
Amortization of gains (losses) 1,864 1,982
Settlements 3,400 2,550
Benefit cost 2,814 1,931
Post Retirement Benefits    
Components of net periodic benefit expense [Abstract]    
Service cost 0 0
Interest cost 55 141
Expected return on plan assets 0 0
Amortization of prior service cost (492) (492)
Amortization of gains (losses) (72) (116)
Settlements 0 0
Benefit cost $ (509) $ (467)