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Accrued Liabilities
 12 Months Ended
Dec. 31, 2020
Accrued Liabilities  
Accrued Liabilities

9. Accrued Liabilities

 

Accrued liabilities consisted of the following:

 

 

 

 

 

 

 

 

 

    

December 31, 2020

    

December 31, 2019

 

 

 

 

 

 

    

Accrued payroll and related employee expenses

 

$

4,938

 

$

3,954

Accrued employee performance bonus

 

 

4,873

 

 

3,920

Employer payroll tax, including social security deferral

 

 

3,034

 

 

368

Accrued rebates

 

 

1,178

 

 

1,573

Sales tax liability

 

 

1,696

 

 

1,907

Accrued Interest

 

 

4,145

 

 

4,951

Operating and financing lease liability (current portion)

 

 

4,407

 

 

4,494

Other

 

 

3,878

 

 

3,568

Total accrued expenses

 

$

28,149

 

$

24,735

 

 

The estimated sales tax liability is further described in Note 15, Commitments and Contingencies and Note 2, Summary of Significant Accounting Policies.  Other accrued liabilities include miscellaneous accruals for invoices not yet received and other items such as self- insurance liability accruals and the current portion of uncertain tax position reserves.