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Stock-based Compensation, Summary (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Stock-based Compensation [Abstract]        
Stock-based compensation expense $ 452 $ 581 $ 820 $ 1,243
2016 Omnibus Incentive Plan [Member]        
Stock-based Compensation [Abstract]        
Common stock reserved for future issuance (in shares) 7,832,651   7,832,651  
Number of shares available for issuance (in shares) 3,283,167   3,283,167