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Reduction in Workforce - Additional Information (Detail) | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 31, 2020 Employee | Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 USD ($) Employee
Restructuring Charges [Abstract] |  |  |  |
Reduction in workforce | Employee | 2 |  |  | 8
Additional restructuring charges |  | $ 100,000 | $ 600,000 |
Payments for Restructuring |  |  | 66,000 |
Payments for accrued restructuring costs |  | $ 500,000 | $ 500,000 | $ 500,000
Reduction in workforce, percentage |  |  |  | 22.00%

X
- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3367-108585 + Details
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- Definition Amount of expected cost remaining for the specified restructuring cost. + References No definition available. + Details
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- Definition The number of positions eliminated during the period as a percentage of total positions eliminated during the period in connection with the restructuring plan(s). + References No definition available. + Details
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