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Net Earnings (Loss) Per Share (Narrative) (Details) - USD ($) $ / shares in Units, shares in Thousands		3 Months Ended		6 Months Ended
	Nov. 16, 2021	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Subsidiary, Sale of Stock [Line Items]
Shares excluded from diluted loss per share calculation (in shares)		7,100	5,310	7,100	5,310
Share price (in dollars per share)		$ 9.67	$ 14.54	$ 9.67	$ 14.54
Restricted Stock
Subsidiary, Sale of Stock [Line Items]
Shares excluded from diluted loss per share calculation (in shares)		1,047		1,047
Incentive Awards
Subsidiary, Sale of Stock [Line Items]
Shares excluded from diluted loss per share calculation (in shares)		109	111	109	111
Dp polar GmbH
Subsidiary, Sale of Stock [Line Items]
Shares excluded from diluted loss per share calculation (in shares)		92		92
Shares Issuable
Subsidiary, Sale of Stock [Line Items]
Shares excluded from diluted loss per share calculation (in shares)			319		319
Convertible Senior Notes Due 2026 \| Senior Notes
Subsidiary, Sale of Stock [Line Items]
Issued amount	$ 460,000,000
Interest rate (as a percentage)	0.00%
Conversion price (in dollars per share)	$ 35.92