Additions

Deductions

Balance at
Beginning of
Period

Provision
Related to
Current
Period Sales

Actual
Distribution
Fees,
Discounts and
Chargebacks
Related to
Current Period
Sales

Actual
Distribution
Fees,
Discounts and
Chargebacks
Related to
Prior Period
Sales

Balance at
End of Period

Allowance for distribution fees, discounts and chargebacks:

For the year ended December 31, 2019

$

1,840

$

33,827

$

(31,251

)

$

(1,840

)

$

2,576

For the year ended December 31, 2020

$

2,576

$

51,684

$

(47,463

)

$

(2,576

)

$

4,221

For the year ended December 31, 2021

$

4,221

$

72,011

$

(63,544

)

$

(4,221

)

$

8,467