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Stock-Based Compensation - Schedule of Stock Options (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Options      
Option granted (in shares) 723,951 340,558  
Weighted Average Exercise Price      
Option granted (in dollars per share) $ 4.28 $ 7.30  
Aggregate Intrinsic Value      
Intrinsic value for restricted stock outstanding     $ 189
2017 Stock Incentive Plan      
Options      
Beginning balance (in shares) 533,583 224,355  
Option granted (in shares) 723,951 340,558  
Options exercised (in shares) (11,438) (1,641)  
Options canceled/forfeited (in shares) (14,871) (29,689)  
Ending balance (in shares) 1,231,225 533,583  
Vested and expected to vest (in shares) 1,231,225    
Options exercisable (in shares) 170,139 53,497 0
Weighted Average Exercise Price      
Beginning balance (in dollars per share) $ 14.86 $ 14.01  
Option granted (in dollars per share) 9.55 15.39  
Options exercised (in dollars per share) 14.08 11.27  
Options canceled/forfeited (in dollars per share) 12.92 14.77  
Ending balance (in dollars per share) 11.76 14.86  
Vested and expected to vest (in dollars per share) 11.76    
Options exercisable (in dollars per share) $ 14.68 $ 14.09 $ 0.00
Aggregate Intrinsic Value      
Options exercised $ 63    
Options canceled and forfeited 4    
Outstanding ending balance 9,341    
Vested and expected to vest 9,341    
Options exercised $ 795