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Assets - Assets held for sale (Details) - Asset held for sale - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Apr. 30, 2020	Dec. 31, 2019	Mar. 31, 2020
Assets Held for Sale
Impairment		$ 4,000
Major classes of assets classified as held for sale
Inventories			$ 5,988
Property, plant, and equipment, net			310
Intangible assets, net			6,546
Goodwill			2,359
Impairment			(4,020)
Total Assets held for sale			$ 11,183
Subsequent event
Assets Held for Sale
Consideration	$ 11,400
Transaction price due upon closing (as a percent)	85.00%
Amount held in escrow (as a percent)	15.00%
Period over which portion of transaction price is held in escrow	18 months