NOTE 3 — SUPPLEMENTARY BALANCE SHEET INFORMATION

Accounts Receivable, net:

Accounts receivable is net of allowances for doubtful accounts of $2.2 million and $4.0 million and net of sales returns of $0.3 million and $0.3 million at December 31, 2021 and 2020, respectively.

Inventory includes write-downs for excess and obsolete inventory totaling $1.0 million and $0.8 million as of December 31, 2021 and 2020, respectively. Write-downs for excess and obsolete inventory resulted in expense of $0.3 million, $1.3 million and $15 thousand during the years ended December 31, 2021, 2020, and 2019, respectively.

The Company did not recognize any impairments on property, plant, and equipment during the years ended December 31, 2021, 2020 and 2019.

The CARES Act allows employers to defer the deposit and payment of the employer's share of Social Security taxes through December 31, 2020. Under the CARES Act, the Company deferred $0.2 million and $0.4 million as of December 31, 2021 and 2020, respectively. The deferred liability is included in accrued payroll and benefits.

As of December 31, 2021, a settlement accrual liability of $0.8 million related to the Settlement Agreement (as defined in Note 7 to these consolidated financial statements) was included in current accrued liabilities. Refer to Note 7 - Commitments and Contingencies for additional information.