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Related Party Transactions (Tables)
 12 Months Ended
Dec. 31, 2016
Related Party Transactions [Abstract]  
Related Party Transactions Rent Expense [Table Text Block]
The table below presents rent expense associated with these leases for the past three years (in thousands):

 
 
2016
 
2015
 
2014
NCC
 
$
1,035

 
$
1,016

 
$
989

Other
 
—

 
—

 
64

Total
 
$
1,035

 
$
1,016

 
$
1,053