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Number of shares issued under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		6 Months Ended	12 Months Ended
	Sep. 23, 2021	Dec. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Jun. 30, 2020
Share-based Compensation [Line Items]
Options granted (in shares)			0	0	0
Options outstanding (in dollars per share)			$ 13.38	$ 20.38
Unrecognized stock-based compensation expense			$ 64.3
Weighted-average period for recognition (years)			2 years
2017 Plan
Share-based Compensation [Line Items]
Shares available for grant (in shares)			1,900,000
2012 Purchase Plan
Share-based Compensation [Line Items]
Number of additional shares authorized (in shares)	4,000,000
Maximum number of shares per participant per offering period (in shares)	5,000
Shares issued under the plan (in shares)			1,700,000
President and Chief Executive Officer
Share-based Compensation [Line Items]
Options granted (in shares)		700,000
Weighted average grant date fair value of options granted (in dollars per share)		$ 13.38
Options outstanding (in dollars per share)			$ 13.38
Options and RSUs \| Non-Employee Director
Share-based Compensation [Line Items]
Service period for award vesting (in years)			1 year
RSUs
Share-based Compensation [Line Items]
Weighted average grant date fair value (in dollars per share)		$ 13.69	$ 25.78	$ 29.83	$ 27.96
Fair value of restricted stock units that vested		$ 29.1	$ 31.0	$ 22.6	$ 32.4
RSUs \| Maximum
Share-based Compensation [Line Items]
Service period for award vesting (in years)			4 years
RSUs \| Minimum
Share-based Compensation [Line Items]
Service period for award vesting (in years)			3 years
RSUs \| Achievement levels based on EPS Targets
Share-based Compensation [Line Items]
Vesting weight (in percent)			34.00%
RSUs \| Relative Total Stockholders Return
Share-based Compensation [Line Items]
Vesting weight (in percent)			33.00%
RSUs \| Performance based on Nasdaq Healthcare Provider Index
Share-based Compensation [Line Items]
Vesting weight (in percent)			33.00%
Stock Options \| President and Chief Executive Officer
Share-based Compensation [Line Items]
Award expiration period (in years)			7 years