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PENSION AND OTHER POST-EMPLOYMENT BENEFITS (Tables)
 9 Months Ended
Sep. 30, 2018
Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]  
Schedule of Components of the Net Periodic Benefit Income
The following tables set forth the components of the net periodic benefit cost (income) for the Company’s pension and other post-employment benefit plans (in thousands):
 
Pension Benefits
 
Other Benefits
 
Three Months Ended September 30,
 
Three Months Ended September 30,
 
2018
 
2017
 
2018
 
2017
Interest cost
$
2,612

 
$
2,390

 
$
30

 
$
43

Expected return on plan assets
(3,997
)
 
(4,615
)
 
—

 
—

Amortization of prior service credit
—

 
—

 
(182
)
 
(371
)
Recognized actuarial loss (gain)
73

 
154

 
(18
)
 
1

Pension settlement charge(1)
628

 
—

 
—

 
—

Net periodic benefit income
$
(684
)
 
$
(2,071
)
 
$
(170
)
 
$
(327
)

(1) The pension settlement charge was related to cash payments from lump sum elections.
 
Pension Benefits
 
Other Benefits
 
Nine Months Ended September 30,
 
Nine Months Ended September 30,
 
2018
 
2017
 
2018
 
2017
Interest cost
$
7,620

 
$
7,170

 
$
90

 
$
129

Expected return on plan assets
(13,209
)
 
(13,845
)
 
—

 
—

Amortization of prior service credit
—

 
—

 
(546
)
 
(1,113
)
Recognized actuarial loss (gain)
805

 
462

 
(54
)
 
3

Pension settlement charge(2)
5,236

 
—

 
—

 
—

Net periodic benefit cost (income)
$
452

 
$
(6,213
)
 
$
(510
)
 
$
(981
)
(2) The pension settlement charge was related to the purchase of annuities for certain pension plan retirees as well as cash payments from lump sum elections.