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Inventories (Tables) | 12 Months Ended
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Dec. 31, 2021
Inventory Disclosure [Abstract] |
Schedule of components of inventory | Inventories are as follows (in thousands):
| December 31,
| 2021 |  | 2020
Raw materials | $ | 5,610 |  |  | $ | 7,190 |
Finished goods | 13,985 |  |  | 15,705 |
Inventories | 19,595 |  |  | 22,895 |
Less reserve for excess and obsolete inventory | (10,141) |  |  | (11,058) |
Inventories, net | $ | 9,454 |  |  | $ | 11,837 |
Schedule of reserve for excess and obsolete inventory | Changes in the reserve for excess and obsolete inventory are as follows (in thousands):
| Years ended December 31, |  |
| 2021 |  | 2020 |  |
Balance, beginning of year | $ | 11,058 |  |  | $ | 5,698 |  |  |
Charged to provisions | 623 |  |  | 12,261 |  |  |
Deductions for sales and disposals | (1,540) |  |  | (6,901) |  |  |
Balance, end of the year | $ | 10,141 |  |  | $ | 11,058 |  |  |

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