Net Income (Loss) Per Share - Schedule of Basic and Diluted Net Income (Loss) Per Share to Common Stockholders (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Net (loss) income attributable to TOI	$ (29,998)	$ 19,286
Less: Deemed dividend	0	0
Net (loss) income attributable to TOI available for distribution	(29,998)	19,286
Net (loss) income attributable to participating securities, basic	(5,504)	3,519
Net (loss) income attributable to common stockholders, basic	$ (24,494)	$ 15,767
Weighted average common shares outstanding, basic (in shares)	73,449,132	73,252,365
Net (loss) income per share attributable to common stockholders, basic (in usd per share)	$ (0.33)	$ 0.22
Net (loss) income attributable to TOI available for distribution	$ (29,998)	$ 19,286
Net (loss) income attributable to participating securities, diluted	(5,504)	3,405
Net (loss) income attributable to common stockholders, diluted	$ (24,494)	$ 15,881
Dilutive effect of stock options (in shares)	0	2,995,601
Weighted average shares outstanding, diluted (in shares)	73,449,132	76,247,966
Net (loss) income per share attributable to common stockholders, diluted (in usd per share)	$ (0.33)	$ 0.21