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Related Party (Tables)
 3 Months Ended
Mar. 31, 2018
Related Party [Abstract]  
Schedule of Related Party Transactions [Table Text Block]
The related payments (receipts) with related parties for the three months ended March 31, 2018 and 2017 (in thousands) were as follows:

 
Three months ended March 31,
 
2018
 
2017
Receipts for trailer sales
$
—

 
$
(12
)
Payments for parts and services
136

 
109

Terminal lease payments
247

 
415

 
$
383

 
$
512