Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Goodwill - Narrative (Details) - USD ($) $ in Thousands	11 Months Ended	12 Months Ended
Goodwill - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 31, 2019	Jan. 31, 2018	Jun. 30, 2018
Business Acquisition [Line Items]
Goodwill impairment charge	$ 0	$ 881	$ 0
MuOx Limited
Business Acquisition [Line Items]
Fair value of goodwill				$ 0