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Employee Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2014
Pension Plans, Defined Benefit  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Components of the net periodic pension and postretirement benefit cost
Components of net periodic pension plans cost (benefit) were as follows:
 
2014
 
2013
 
2012
Service cost
$
453

 
$
699

 
$
608

Interest cost
6,885

 
6,327

 
6,832

Expected return on assets
(8,381
)
 
(9,278
)
 
(9,855
)
Amortization of prior service cost
282

 
322

 
324

Amortization of actuarial loss
1,717

 
1,942

 
594

Net periodic pension plans cost (benefit)
$
956

 
$
12

 
$
(1,497
)
Schedule of Changes in Projected Benefit Obligations
The status of the pension plans at December 31, 2014 and 2013 were as follows:
 
2014
 
2013
Change in projected benefit obligation:
 
 
 
Projected benefit obligation at beginning of year
$
156,989

 
$
181,137

Service cost
453

 
699

Interest cost
6,885

 
6,327

Plan change
719

 
—

Benefit payments
(7,587
)
 
(7,097
)
Actuarial loss (gain)
35,863

 
(24,077
)
Projected benefit obligation at end of year
$
193,322

 
$
156,989

Change in plan assets:
 
 
 
Fair value of plan assets at beginning of year
$
168,408

 
$
187,150

Actual return (loss) on assets
22,521

 
(11,966
)
Employer contributions
329

 
321

Benefit payments
(7,587
)
 
(7,097
)
Fair value of plan assets at end of year
$
183,671

 
$
168,408

Funded status – net (liability) prepaid
$
(9,651
)
 
$
11,419

Amounts recognized in the consolidated balance sheets consist of:
 
 
 
Prepaid pension cost
$
7,092

 
$
16,515

Accrued liabilities
(322
)
 
(325
)
Pension benefit obligations
(16,421
)
 
(4,771
)
Net amount recognized
$
(9,651
)
 
$
11,419

Pre-tax components of accumulated other comprehensive loss:
 
 
 
Unrecognized actuarial loss
$
(45,009
)
 
$
(25,002
)
Unrecognized prior service cost
(1,731
)
 
(1,295
)
Total
$
(46,740
)
 
$
(26,297
)
Accumulated benefit obligation
$
192,638

 
$
156,474
Schedule of Assumptions Used
The assumptions used to measure the projected benefit obligations for the Company’s defined benefit pension plans were as follows:
 
2014
 
2013
Discount rate
3.75%
 
4.50%
Projected annual salary increases
0 - 3.00%
 
0 - 3.00%
The assumptions used to determine net periodic pension cost (benefit) were as follows: 
 
2014
 
2013
 
2012
Discount rate
4.50%
 
3.50 - 3.75%
 
4.25%
Expected long-term rate of return on plan assets
5.25%
 
5.25%
 
5.75%
Projected annual salary increases
0 - 3.00%
 
0 - 3.00%
 
0 - 3.00%
Schedule of Fair Value of Plan Assets
The fair values of the Company’s pension plan assets fall within the following levels of the fair value hierarchy as of December 31, 2014:
 
Level 1
 
Level 2
 
Level 3
 
Total
Fixed income securities (a)
$
15,839

 
$
167,882

 
$
—

 
$
183,721

Accounts payable – pending trades
 
 
 
 
 
 
(50
)
Total
 
 
 
 
 
 
$
183,671

(a) Fixed income securities are comprised of corporate bonds (75%), government bonds (17%), government agencies securities (4%) and other fixed income securities (4%).
The fair values of the Company’s pension plan assets fall within the following levels of the fair value hierarchy as of December 31, 2013:
 
Level 1
 
Level 2
 
Level 3
 
Total
Fixed income securities (b)
$
15,629

 
$
152,803

 
$
—

 
$
168,432

Accounts payable – pending trades
 
 
 
 
 
 
(24
)
Total
 
 
 
 
 
 
$
168,408


(b) Fixed income securities are comprised of corporate bonds (71%), government bonds (20%), government agencies securities (5%) and other fixed income securities (4%).
Schedule of Expected Benefit Payments
The estimated future pension benefit payments are:
2015
$
7,990

2016
8,392

2017
8,859

2018
9,185

2019
9,597

2020 — 2024
52,697
Other Postretirement Benefit Plans, Defined Benefit  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Components of the net periodic pension and postretirement benefit cost
Components of net periodic postretirement plan (benefit) cost for 2014, 2013 and 2012 were as follows:
 
2014
 
2013
 
2012
Service cost
$
56

 
$
153

 
$
161

Interest cost
76

 
148

 
170

Amortization of prior service cost
—

 
—

 
—

Amortization of actuarial gain
(336
)
 
(23
)
 
—

Net periodic postretirement plan (benefit) cost
$
(204
)
 
$
278

 
$
331
Schedule of Changes in Projected Benefit Obligations
The status of the postretirement plan at December 31, 2014 and 2013 was as follows:
 
2014
 
2013
Change in accumulated postretirement benefit obligations:
 
 
 
Accumulated postretirement benefit obligation at beginning of year
$
1,977

 
$
4,379

Service cost
56

 
153

Interest cost
76

 
148

Benefit payments
(224
)
 
(201
)
Actuarial loss (gain)
667

 
(2,502
)
Accumulated postretirement benefit obligation at end of year
$
2,552

 
$
1,977

Funded status – net liability
$
(2,552
)
 
$
(1,977
)
Amounts recognized in the consolidated balance sheets consist of:
 
 
 
Accrued liabilities
$
(226
)
 
$
(139
)
Postretirement benefit obligations
(2,326
)
 
(1,838
)
Net amount recognized
$
(2,552
)
 
$
(1,977
)
Pre-tax components of accumulated other comprehensive loss:
 
 
 
Unrecognized actuarial gain
$
2,137

 
$
3,139

Total
$
2,137

 
$
3,139
Schedule of Assumptions Used
The weighted average discount rate used to determine the net periodic postretirement benefit costs and the accumulated postretirement benefit obligations were as follows:
 
2014
 
2013
 
2012
Net periodic postretirement benefit costs
4.00%
 
3.50%
 
3.75%
Accumulated postretirement benefit obligations
3.25%
 
4.00%
 
3.50%
Schedule of Assumed Health Care Cost and Trend Rates for Medical Plans
The assumed health care cost trend rates for medical plans at December 31 were as follows:
 
2014
 
2013
 
2012
Medical cost trend rate
7.00%
 
7.50%
 
8.00%
Ultimate medical cost trend rate
5.00%
 
5.00%
 
5.00%
Year ultimate medical cost trend rate will be reached
2019
 
2019
 
2019