Stockholders' Equity - Stock Option Activity (Details) - $ / shares	1 Months Ended			12 Months Ended
	Jan. 31, 2021	Apr. 30, 2020	Nov. 30, 2019	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Number of Options
Outstanding at beginning of period (in shares)	3,464,001			4,962,000	5,766,000	3,464,001
Granted (in shares)	703,170	47,335	3,416,666	0	0	703,000
Exercised (in shares)				(1,553,000)	(804,000)	(1,447,000)
Forfeited (in shares)						(914,000)
Outstanding at end of period (in shares)				3,409,000	4,962,000	5,766,000
Weighted-Average Exercise Price per Share
Outstanding at beginning of period (in dollars per share)	$ 11.56			$ 12.19	$ 11.26	$ 11.56
Granted (in dollars per share)		$ 16.25	$ 11.50			48.72
Exercised (in dollars per share)				6.24	5.69	10.16
Forfeited (in dollars per share)						11.66
Outstanding at end of period (in dollars per share)				$ 14.90	$ 12.19	$ 11.26
Weighted-Average Remaining Contractual Term
Weighted average remaining contractual term (in years)				4 years 10 months 24 days
Stock Options Exercisable
Number of Options
Outstanding at beginning of period (in shares)	1,155,000			4,649,000	4,575,000	1,155,000
Vested (in shares)				234,000	878,000	907,000
Exercised (in shares)				(1,553,000)	(804,000)	(1,447,000)
Outstanding at end of period (in shares)				3,330,000	4,649,000	4,575,000
Weighted-Average Grant Date Fair Value per Share
Vested (in dollars per share)				$ 48.72	$ 18.12	$ 11.50
Weighted-Average Exercise Price per Share
Outstanding at beginning of period (in dollars per share)	$ 11.56			9.73	7.39	11.56
Granted (in dollars per share)						6.24
Exercised (in dollars per share)				6.24	5.69	10.16
Outstanding at end of period (in dollars per share)				$ 14.10	$ 9.73	$ 7.39
Weighted-Average Remaining Contractual Term
Weighted average remaining contractual term (in years)				4 years 10 months 24 days
Stock Options Unexercisable
Number of Options
Outstanding at beginning of period (in shares)	2,309,000			313,000	1,191,000	2,309,000
Granted (in shares)						703,000
Vested (in shares)				234,000	878,000	907,000
Forfeited (in shares)						(914,000)
Outstanding at end of period (in shares)				79,000	313,000	1,191,000
Weighted-Average Grant Date Fair Value per Share
Vested (in dollars per share)				$ 48.72	$ 18.12	$ 11.50
Weighted-Average Exercise Price per Share
Outstanding at beginning of period (in dollars per share)	$ 11.56			48.72	26.15	11.56
Granted (in dollars per share)						48.72
Forfeited (in dollars per share)						11.66
Outstanding at end of period (in dollars per share)				$ 48.72	$ 48.72	$ 26.15
Weighted-Average Remaining Contractual Term
Weighted average remaining contractual term (in years)				2 years 1 month 6 days
AeroCare
Number of Options
Granted (in shares)						3,960,000
Weighted-Average Exercise Price per Share
Granted (in dollars per share)						$ 6.24
AeroCare | Stock Options Exercisable
Number of Options
Granted (in shares)						3,960,000
2019 Incentive Plan
Number of Options
Outstanding at beginning of period (in shares)	3,464,000			2,219,000	2,219,000	3,464,000
Granted (in shares)						703,000
Exercised (in shares)						(1,034,000)
Forfeited (in shares)						(914,000)
Outstanding at end of period (in shares)				2,219,000	2,219,000	2,219,000
Weighted-Average Grant Date Fair Value per Share
Outstanding at beginning of period (in dollars per share)	$ 2.18			$ 3.75	$ 3.75	$ 2.18
Granted (in dollars per share)						9.81
Exercised (in dollars per share)						2.19
Forfeited (in dollars per share)						2.27
Outstanding at end of period (in dollars per share)				3.75	3.75	3.75
Weighted-Average Exercise Price per Share
Outstanding at beginning of period (in dollars per share)	$ 11.56			19.36	19.36	11.56
Granted (in dollars per share)						48.72
Exercised (in dollars per share)						11.57
Forfeited (in dollars per share)						11.66
Outstanding at end of period (in dollars per share)				$ 19.36	$ 19.36	$ 19.36
Weighted-Average Remaining Contractual Term
Weighted average remaining contractual term (in years)				5 years 1 month 6 days