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Commitments and Contingencies - Additional Information (Details) - USD ($) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 03, 2017 | Dec. 31, 2017 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Commitments and Contingencies |  |  |  |  |
Operating lease beginning period |  |  | 2017-10 |  |
Operating lease expiration period |  |  | 2020-10 |  |
Lessee, operating lease, discount rate |  |  | 8.00% |  |
Option to extend additional lease term |  |  | 20 months 15 days |  |
Operating lease, option to extend |  |  | option to extend the lease for an additional 20.5 month period |  |
Termination fee |  | $ 270,000 |  |  |
Rent expenses |  |  | $ 212,000 | $ 212,000 | $ 470,000
Commission paid |  |  |  | 450,000 |
Commissions expense |  |  |  | $ 250,000 |
M West Propco - Old Lessor |  |  |  |  |
Commitments and Contingencies |  |  |  |  |
Termination fee | $ 250,000 |  |  |  |

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- Definition Discount rate used by lessee to determine present value of operating lease payments. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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- Definition Description of terms and conditions of option to extend lessee's operating lease. Includes, but is not limited to, information about option recognized as part of right-of-use asset and lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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