​

​

As of December 31,

​

2021

2020

Accrued liabilities:

​

​

​

​

​

​

Salaries, wages, and commissions

​

$

71,664

​

$

34,584

Insurance liabilities

​

​

24,425

​

​

22,007

Customer rebates

​

​

15,625

​

​

6,191

Deferred revenue

​

​

14,311

​

​

6,542

Employee tax-related liabilities

​

​

12,545

​

​

12,603

Sales & Property taxes

​

​

9,364

​

​

6,939

Interest payable on long-term debt

​

​

8,798

​

​

3,924

Other

​

​

19,159

​

​

15,159

Total accrued liabilities

​

$

175,891

​

$

107,949