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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Statement of Financial Position [Abstract]    
Accumulated depreciation and amortization $ 6,600 $ 3,340
Preferred stock par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 50,000,000 50,000,000
Preferred stock, shares outstanding (in shares) 0 0
Common stock par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 100,000,000 100,000,000
Common stock, shares issued (in shares) 23,483,286 23,141,284
Common stock, shares outstanding (in shares) 18,865,140 18,523,138
Treasury stock (in shares) 4,618,146 4,618,146