Income (Loss) Per Share - Shares Excluded from EPS (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Common share equivalents
Diluted income (loss) per share
Securities excluded from the diluted calculation as their effect would be antidilutive		947	531
Potentially dilutive shares
Diluted income (loss) per share
Securities excluded from the diluted calculation as their effect would be antidilutive	456	923	1,689
Convertible Notes
Diluted income (loss) per share
Securities excluded from the diluted calculation as their effect would be antidilutive	8,421	17,753	8,618