​

​

Year Ended December 31, 

​

2023

2022

​

2021

Allowance for distribution fees, discounts and chargebacks at the beginning of the year

​

$

1,830

​

$

1,885

​

$

806

Additions due to current period provision

​

21,821

​

14,806

​

12,174

Deductions due to payment of distribution fees, discount and chargebacks

​

​

(21,007)

​

​

(14,861)

​

​

(11,095)

Allowance for distribution fees, discounts and chargebacks at the beginning of the year

​

$

2,644

​

$

1,830

​

$

1,885