Notes Receivables (Details) $ in Millions				3 Months Ended
	Mar. 31, 2023 USD ($) D	Jul. 14, 2022 USD ($)	Sep. 29, 2021	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Greenbrook TMS Inc | Secured Promissory Note
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term of notes receivable	4 years
Percentage of unpaid amount	200.00%
Discount rate	20.00%
Number of day volume-weighted average closing price | D	30
Principal amount of notes receivable	$ 6.0			$ 6.0
Greenbrook TMS Inc | Secured Promissory Note | Secured Overnight Financing Rate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest rate (as a percent)	7.65%			7.65%
Success TMS
Accounts, Notes, Loans and Financing Receivable [Line Items]
Repayment of notes issued		$ 10.5
Success TMS | Secured Promissory Note
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term of master sales agreement			5 years
Term of notes receivable			5 years
Principal amount of notes receivable						$ 10.0
Success TMS | Secured Promissory Note | Other income, net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income recognized				$ 0.6	$ 0.2
Success TMS | Secured Promissory Note | Prime Rate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest rate (as a percent)			6.00%