Accrued Liabilities (Tables)
 9 Months Ended
Sep. 30, 2016
Accrued Liabilities, Current [Abstract]  
Accrued Liabilities
Accrued liabilities consist of the following:
In Thousands
September 30, 2016
 
December 31, 2015
 
 
 
 
Sales volume discounts payable
$
12,525

 
$
13,193

Property taxes payable
2,611

 
3,444

Commissions payable
1,887

 
1,939

Accrued salaries
5,390

 
5,801

Other accrued liabilities
1,274

 
1,122

Total accrued liabilities
$
23,687

 
$
25,499