Registration of securities issued in business combination transactions

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details)

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ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES      
Professional services $ 3,897 $ 2,508 $ 780
Compensation and benefits related 7,359 2,068 897
Warranty reserve 2,030 1,553 1,491
Inventory purchases 1,506 86 620
Income tax payable 1,331    
Sales and use and franchise taxes 224 586 578
Franchise and royalty fees 227 159  
Goods received payable 1,201    
Other 3,193 605 687
Total accrued expenses and other current liabilities 20,968 7,565 5,053
Warranty reserve, at the beginning of the period 1,553 1,491  
Warranty reserve assumed in acquisition 316    
Additions to warranty reserve 797 346 2,352
Claims fulfilled (636) (284) (977)
Warranty reserve, at the end of the period $ 2,030 $ 1,553 $ 1,491