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Trade Accounts and Notes Receivable (Tables)
 12 Months Ended
Dec. 31, 2015
Trade Accounts and Notes Receivable
Trade accounts and notes receivable from customers at December 31, 2015 and 2014 consist of the following:
(In thousands)
2015
 
2014
Accounts receivable
$
138,473

 
$
151,082

Notes receivable
4,254

 
4,706

 
142,727

 
155,788

Less allowance for doubtful accounts
1,318

 
1,827

 
$
141,409

 
$
153,961