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Stock-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Options outstanding to purchase common stock | 1,894,862 |  | 1,894,862 |  | 1,867,747
Options exercisable period |  |  | 10 years |  |
Options granted to purchase |  |  | 131,905 | 0 |
Cancellation of options to purchase common stock |  |  | 104,746 |  |
Options exercised |  |  | 44 |  |
Weighted-average grant date fair value of options granted |  |  | $ 5.94 |  |
Total unrecognized compensation expense related to unvested options | $ 15,300 |  | $ 15,300 |  |
Total unrecognized compensation expense related to unvested options, expects to recognize over estimated weighted average period |  |  | 2 years 3 months |  |
Share based compensation expense | $ 2,619 | $ 177 | $ 4,119 | $ 341 |
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% |  |
Restricted Stock |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Restricted stock awards outstanding to purchase common stock | 2,491,007 |  | 2,491,007 |  |
Total unrecognized compensation expense related to unvested options, expects to recognize over estimated weighted average period |  |  | 1 year 11 months 12 days |  |
Shares, Granted |  |  | 2,560,148 |  |
Shares, Forfeited |  |  | 69,141 |  |
Share based compensation expense |  |  | $ 1,200 |  |
Total fair value of shares vested |  |  | $ 0 |  |
Shares, Vested |  |  | 0 |  |
Weighted Average Grant-Date Fair Value, Granted |  |  | $ 19.26 |  |
Total unrecognized compensation expense related to unvested restricted shares | $ 46,800 |  | $ 46,800 |  |
Mohawk 2014 Plan |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Options outstanding to purchase common stock | 328,959 |  | 328,959 |  |
Shares reserved for future issuance | 40,882 |  | 40,882 |  |
Mohawk 2018 Plan |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Shares reserved for future issuance | 77,261 |  | 77,261 |  |
Mohawk 2018 Plan | Stock Options |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Options outstanding to purchase common stock | 1,565,903 |  | 1,565,903 |  |
Mohawk 2018 Plan | Restricted Stock |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Restricted stock awards outstanding to purchase common stock | 64,982 |  | 64,982 |  |
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] |  |  |  |  |
Aggregate shares of restricted stock outstanding | 2,426,025 |  | 2,426,025 |  |
2018 Equity Incentive Plan | Restricted Stock |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Shares, Granted |  |  | 64,982 |  |

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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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