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Post Retirement Benefits (Tables)
 6 Months Ended
Jun. 30, 2012
Compensation and Retirement Disclosure [Abstract]  
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
The components of expense for Core Molding Technologies’ post retirement benefit plans for the three and six months ended June 30, 2012 and 2011 are as follows:
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2012
 
2011
 
2012
 
2011
Pension expense:
 
 
 
 
 
 
 
Multi-employer plan contributions
$
117,000

 
$
110,000

 
$
229,000

 
$
204,000

Defined contribution plan contributions
127,000

 
125,000

 
301,000

 
290,000

Total pension expense
244,000

 
235,000

 
530,000

 
494,000

 
 
 
 
 
 
 
 
Health and life insurance:
 
 
 
 
 
 
 
Interest cost
91,000

 
132,000

 
182,000

 
265,000

Amortization of prior service costs
(124,000
)
 
(124,000
)
 
(248,000
)
 
(248,000
)
Amortization of net loss
40,000

 
55,000

 
79,000

 
110,000

Net periodic benefit cost
7,000

 
63,000

 
13,000

 
127,000

 
 
 
 
 
 
 
 
Total post retirement benefits expense
$
251,000

 
$
298,000

 
$
543,000

 
$
621,000