Sale of Business - Loss on Sale of Business (Details) - USD ($)		3 Months Ended		9 Months Ended
	Jun. 25, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Currency translation adjustment loss		$ (14,000)	$ 2,443,000	$ 52,074,000	$ 2,443,000
Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales price	$ 35,008,000
Net assets sold (including working capital)	(36,198,000)
Currency translation adjustment loss	(52,074,000)
Goodwill allocated	(3,000,000)
Legal fees	(1,031,000)
Total loss on sale of business	$ (57,295,000)