v2.4.0.6
Accrued Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Accrued liabilities    
Sales volume discounts payable $ 13,940 $ 16,220
Property taxes payable 2,937 2,809
Commissions payable 1,768 2,053
Accrued salaries 4,235 3,548
Other accrued liabilities 558 682
Total accrued liabilities $ 23,438 $ 25,312