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Inventories, net
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Inventories, net
Note 5. Inventories, net

Inventories consisted of the following:
(in thousands)
​ ​
December 31,
2021
​ ​
December 31,
2020
Finished goods
​ ​
$8,950
​ ​
$1,686
Allowance for slow-moving and obsolete inventory
​ ​
(90)
​ ​
—
Total
​ ​
$8,860
​ ​
$1,686

Activity in the allowance for slow-moving and obsolete inventory for each period was as follows:
 
​ ​
Year ended December 31,
(in thousands)
​ ​
2021
​ ​
2020
​ ​
2019
Balance at beginning of period
​ ​
$—
​ ​
$—
​ ​
$—
Additions charged to earnings
​ ​
90
​ ​
—
​ ​
—
Write-offs of obsolete inventory
​ ​
—
​ ​
—
​ ​
—
Balance at end of period
​ ​
$90
​ ​
$—
​ ​
$—