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Employee Benefits (Tables)
 12 Months Ended
Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]  
Change in benefit obligation, plan assets funded status and net periodic pension cost (benefit) [Table Text Block]
The following table presents information regarding this plan (in thousands):
 
 
December 31,
 
 
2014
 
2013
Change in projected benefit obligation:
 
 
 
 
Projected benefit obligation at beginning of year
 
$
44,765

 
$
48,028

Interest cost
 
1,685

 
1,532

Actuarial loss (gain)
 
2,878

 
(1,543
)
Benefits paid
 
(4,104
)
 
(3,252
)
Projected benefit obligation at end of year1,2
 
$
45,224

 
$
44,765

Change in plan assets:
 
 
 
 

Plan assets at fair value at beginning of year
 
$
48,812

 
$
45,920

Actual return on plan assets
 
4,735

 
6,144

Benefits paid
 
(4,104
)
 
(3,252
)
Plan assets at fair value at end of year
 
$
49,443

 
$
48,812

 
 
 
 
 
Funded status of the plan
 
$
4,219

 
$
4,047

Components of net periodic benefit costs:
 
 
 
 

Interest cost
 
$
1,685

 
$
1,532

Expected return on plan assets
 
(2,539
)
 
(2,185
)
Recognized prior service cost
 
(1,175
)
 
(1,175
)
Amortization of unrecognized net loss
 
2,584

 
3,830

Net periodic pension cost
 
$
555

 
$
2,002


1 
Projected benefit obligation equals accumulated benefit obligation.
2 
Projected benefit obligation is based on January 1 measurement date.
Valuation assumptions used [Table Text Block]

Weighted-average assumptions as of December 31:
 
2014
 
2013
Discount rate
 
3.42
%
 
4.05
%
Expected return on plan assets
 
6.00
%
 
6.00
%
Expected future benefit payments [Table Text Block]
As of December 31, 2014, expected future benefit payments related to the Pension Plan were as follows (in thousands):
2015
$
3,535

2016
3,673

2017
3,270

2018
3,396

2019
3,628

Thereafter
44,057

 
$
61,559