Net Income (Loss) Per Share - Summary of Basic and Diluted Net Income (Loss) Per Share to Common Stockholders (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net (loss) income attributable to TOI	$ (17,419)	$ (16,897)	$ (29,998)	$ (2,674)	$ (5,453)	$ 19,286	$ (64,314)	$ 11,159
Less: Deemed dividend	0			0			0	64
Net (loss) income attributable to TOI available for distribution	(17,419)			(2,674)			(64,314)	11,095
Net (loss) income attributable to participating securities, basic	(3,148)			(499)			(11,723)	2,290
Net (loss) income attributable to common stockholders, basic	$ (14,271)			$ (2,175)			$ (52,591)	$ 8,805
Weighted average common shares outstanding, basic (in shares)	73,469,101			72,184,366			73,679,454	72,807,277
Net (loss) income per share attributable to common stockholders, basic (in dollars per share)	$ (0.19)			$ (0.03)			$ (0.71)	$ 0.12
Less: Change in fair value of convertible option derivative liabilities							$ 0	$ 13,970
Net (loss) income attributable to TOI available for distribution	$ (17,419)			$ (16,644)			(64,314)	(2,875)
Net (loss) income attributable to participating securities, diluted	(3,148)			(2,867)			(11,723)	(515)
Net (loss) income attributable to common stockholders, diluted	$ (14,271)			$ (13,777)			$ (52,591)	$ (2,360)
Dilutive effect of convertible note (in shares)							0	7,396,938
Weighted average shares outstanding, diluted (in shares)	73,469,101			79,581,304			73,679,454	75,300,018
Net (loss) income per share attributable to common stockholders, diluted (in dollars per share)	$ (0.19)			$ (0.17)			$ (0.71)	$ (0.03)