Accrued and Other Current Liabilities - Additional Information (Details) $ in Thousands		1 Months Ended	12 Months Ended		39 Months Ended
	Aug. 15, 2018 USD ($)	Aug. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Mar. 31, 2018 USD ($) HairDryer	May 31, 2018 Consumer
Accrued Expenses And Other Current Liabilities [Line Items]
NET REVENUE			$ 114,451	$ 73,279	$ 6,200
Type of Revenue [Extensible List]					mwk:XtavaAllureHairDryerMember
Remaining recall liability			90	$ 1,512
Xtava Allure Hair Dryer
Accrued Expenses And Other Current Liabilities [Line Items]
Number of Product sold | HairDryer					170,000
Recall costs	$ 1,600		100
Legal matter yet to settle, remaining number of consumers | Consumer						1
Amount of recall liability eliminated, due to materially completed obligation		$ 1,400
Remaining recall liability			$ 100