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Organization and Significant Accounting Policies - Reportable Segments (Details) - segment	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment information
Number of operating segments	3
Number of reportable segments	1
Revenue from Contract with Customer, Segment Benchmark \| Operating Segment Concentration Risk \| Centers
Segment information
Percentage of concentration risk	93.00%	95.00%	95.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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