Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFIT PLANS (Details)

v3.6.0.2
EMPLOYEE BENEFIT PLANS (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
CHANGE IN ACCUMULATED BENEFIT OBLIGATION      
Accumulated Benefit obligation at beginning of year $ 200,375 $ 221,721  
Service cost 71 86 $ 74
Interest cost 9,331 8,915  
Actuarial (gain) loss 6,079 (20,283)  
Benefits paid (18,634) (10,064)  
Accumulated Benefit obligation at end of year $ 197,222 $ 200,375 $ 221,721