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Accrued Liabilities
12 Months Ended
Dec. 31, 2013
Payables and Accruals [Abstract]  
Accrued Liabilities
Accrued Liabilities

Accrued liabilities at December 31, 2013 and 2012 consisted of the following:

 
2013
 
2012
Accrued salaries, wages and benefits
$
3,604

 
$
3,552

Accrual for self-insurance liabilities
5,787

 
3,806

Property taxes
584

 
2,458

Sales tax
481

 

Other accrued expenses
959

 
2,640

 
$
11,415

 
$
12,456