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Accrued Liabilities
3 Months Ended
Mar. 31, 2021
Accrued Liabilities [Abstract]  
Accrued Liabilities Accrued Liabilities
Accrued liabilities as of March 31, 2021 and December 31, 2020 were as follows (in thousands):
March 31, 2021December 31, 2020
Salaries, employee benefits and related taxes$1,119 $1,716 
Operating lease liabilities - current381 370 
Other623 400 
Total$2,123 $2,486