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Redeemable Non-Controlling Interest (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) Partnership	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) Partnership
Changes in Carrying Amount of Redeemable Non-Controlling Interests [Roll Forward]
Beginning balance			$ 269,025
Net income allocated to redeemable non-controlling interest partners	$ 3,790	$ 1,998	9,716	$ 7,539
Reduction due to separation agreement				(3,033)
Ending balance	277,661		277,661		$ 269,025
Carrying Amount (Fair Value) of Redeemable Non-Controlling Interest [Abstract]
Fair value	277,661		$ 277,661		$ 269,025
Number of partnerships in which interest acquired | Partnership			2
Number of partnerships in which interest was sold | Partnership					3
Redeemable Non-Controlling Interest [Member]
Changes in Carrying Amount of Redeemable Non-Controlling Interests [Roll Forward]
Beginning balance			$ 269,025	$ 174,828	$ 174,828
Net income allocated to redeemable non-controlling interest partners			9,716		10,044
Distributions to redeemable non-controlling interest partners			(10,980)		(10,579)
Changes in the fair value of redeemable non-controlling interest			9,821		4,964
Purchases of redeemable non-controlling interest			(8,967)		(8,122)
Capital contribution			90		0
Acquired interest			7,990		100,336
Sales of redeemable non-controlling interest			2,166		1,969
Changes in notes receivable related to redeemable non-controlling interest			(1,200)		(1,016)
Reduction due to separation agreement			0		(3,033)
Adjustments in notes receivables related to the sales of redeemable non-controlling interest			0		(366)
Ending balance	277,661		277,661		269,025
Carrying Amount (Fair Value) of Redeemable Non-Controlling Interest [Abstract]
Contractual time period has lapsed but holder's employment has not terminated	76,941		76,941		74,668
Contractual time period has not lapsed and holder's employment has not terminated	200,720		200,720		194,357
Holder's employment has terminated and contractual time period has expired	0		0		0
Holder's employment has terminated and contractual time period has not expired	0		0		0
Fair value	$ 277,661		$ 277,661		$ 269,025
Number of partnerships in which interest acquired | Partnership			9		14
Number of partnerships in which interest was sold | Partnership			8		7
Therapy Practice [Member] | Minimum [Member]
Business Combination, Description [Abstract]
Business acquisition, percentage of limited partnership acquired	50.00%		50.00%
Therapy Practice [Member] | Maximum [Member]
Business Combination, Description [Abstract]
Business acquisition, percentage of limited partnership acquired	90.00%		90.00%
Therapy Practice [Member] | NewCo. [Member]
Business Combination, Description [Abstract]
Percentage of equity interest of subsidiary contributed for acquisition	100.00%		100.00%
Business acquisition, percentage of general partnership interest acquired	100.00%		100.00%
Business acquisition, consideration payable, term of note			2 years
Employment agreement renewal term			1 year
Non-Compete agreement term under condition of termination of employment of employed selling shareholder			2 years
Therapy Practice [Member] | NewCo. [Member] | Minimum [Member]
Business Combination, Description [Abstract]
Employment agreement term			3 years
Non-Compete agreement term regardless of whether the selling shareholder is employed			5 years
Therapy Practice [Member] | NewCo. [Member] | Maximum [Member]
Business Combination, Description [Abstract]
Employment agreement term			6 years
Non-Compete agreement term regardless of whether the selling shareholder is employed			6 years
ProgressiveHealth [Member] | NewCo. [Member]
Business Combination, Description [Abstract]
Percentage of equity interest of subsidiary contributed for acquisition	100.00%		100.00%
Non-Compete agreement term under condition of termination of employment of employed selling shareholder			2 years
Non-Compete agreement term regardless of whether the selling shareholder is employed			7 years
Percentage of right to sell equity interest on each of the 4th and 5th anniversaries	30.00%		30.00%
Percentage of right to sell equity interest on each of the 6th and 7th anniversaries	10.00%		10.00%

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The distributions during the period for redemption of mandatorily redeemable noncontrolling interests.

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The renewal term of the employment agreement with the subsidiary entity, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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