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Stock-Based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
May 08, 2020
Mar. 12, 2020
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Options exercisable period         10 years  
Options granted     0   0 131,905
Total unrecognized compensation expense related to unvested options     $ 7,500   $ 7,500  
Total unrecognized compensation expense related to unvested options, expects to recognize over estimated weighted average period         1 year 6 months  
Cancellation of options to purchase common stock         150,648 104,746
Options exercised           44
Share based compensation expense     5,171 $ 11,873 $ 12,610 $ 13,373
Restricted Stock            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Total unrecognized compensation expense related to unvested options, expects to recognize over estimated weighted average period         10 months 24 days  
Shares forfeited 134,366 371,329     505,695  
Share based compensation expense     $ 3,600   $ 9,600  
Total fair value of shares vested       $ 10,300   $ 10,300
Weighted Average Grant-Date Fair Value, Granted     $ 3.30   $ 3.30  
Total unrecognized compensation expense related to unvested restricted shares     $ 9,100   $ 9,100  
Shares of restricted common stock granted         573,509  
Share-based Compensation Award, Tranche One            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Options vesting period         4 years  
Share-based Compensation Award, Tranche One | Vesting on First Anniversary            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Options vesting percentage         25.00%  
Share-based Compensation Award, Tranche One | Vesting Over Succeeding 36 Months            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Options vesting period         36 months  
Options vesting percentage         75.00%  
Share-based Compensation Award, Tranche Two            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Options vesting period         3 years  
Share-based Compensation Award, Tranche Two | Vesting on First Anniversary            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Options vesting percentage         33.33%  
Share-based Compensation Award, Tranche Two | Vesting Over Succeeding 24 Months            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Options vesting period         24 months  
Options vesting percentage         66.66%  
Mohawk 2014 Plan            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Shares reserved for future issuance     56,327   56,327  
Mohawk 2018 Plan            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Shares reserved for future issuance     987,621   987,621  
Mohawk 2018 Plan | Restricted Stock            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Shares of restricted common stock granted         300,432  
2019 Equity Plan            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Shares reserved for future issuance     0   0  
2019 Equity Plan | Restricted Stock            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Percentage of restricted shares issued and outstanding         70.00%  
2019 Equity Plan | Share-based Compensation Award, Tranche One | Restricted Stock            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award vesting date         Mar. 13, 2020  
2019 Equity Plan | Share-based Compensation Award, Tranche Two | Restricted Stock            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award vesting date         Oct. 01, 2020  
2019 Equity Plan | Share-based Compensation Award, Tranche Three | Restricted Stock            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award vesting date         Jan. 02, 2021  
2019 Equity Plan | Share-based Compensation Award, Tranche Four | Restricted Stock            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award vesting date         Jul. 01, 2021