Corporate Restructuring - Additional Information (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended
May 31, 2018	Nov. 03, 2018	Nov. 03, 2018
Restructuring Cost And Reserve [Line Items]
Corporate restructuring		$ 262	$ 1,892
Percentage of total corporate employees eliminated as result of restructuring	15.00%
Severance, One-time Termination Benefits and Other Employee-related Costs
Restructuring Cost And Reserve [Line Items]
Corporate restructuring		$ 300	$ 1,900

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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