Segment Information, Segment Financials (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Segment Information [Abstract]
Net revenue	$ 155,675	$ 148,509
Operating Costs [Abstract]
Salaries and related costs	93,731	86,040
Rent, supplies, contract labor and other	31,916	30,100
Provision for credit losses	1,627	1,512
Total operating cost	127,274	117,652
Gross profit	28,401	30,857
Total assets	1,017,256	868,127	$ 997,238
Reportable Segments [Member] | Physical Therapy Operations [Member]
Segment Information [Abstract]
Net revenue	134,425	129,159
Operating Costs [Abstract]
Salaries and related costs	79,774	73,886
Rent, supplies, contract labor and other	28,960	26,672
Provision for credit losses	1,627	1,512
Gross profit	24,064	27,089
Total assets	872,976	726,422
Reportable Segments [Member] | Industrial Injury Prevention Services [Member]
Segment Information [Abstract]
Net revenue	21,250	19,350
Operating Costs [Abstract]
Salaries and related costs	13,957	12,154
Rent, supplies, contract labor and other	2,956	3,428
Provision for credit losses	0	0
Gross profit	4,337	3,768
Total assets	$ 144,280	$ 141,705