Business Combinations - Schedule of Business Acquisitions (Details) - USD ($) $ in Thousands							9 Months Ended
	Jun. 26, 2017	Jun. 12, 2017	Jun. 09, 2017	Jun. 01, 2017	Mar. 01, 2017	Jan. 31, 2017	Jun. 30, 2017
Business Acquisition [Line Items]
Identifiable Intangible Assets							$ 25,634
Tangible Assets							1,943
Total Identifiable Assets							27,577
Goodwill							14,936
Purchase Consideration							42,513
Loma Linda
Business Acquisition [Line Items]
Identifiable Intangible Assets						$ 2,200	2,225
Tangible Assets							33
Total Identifiable Assets							2,258
Goodwill							483
Purchase Consideration						$ 2,700	2,741
Rainbow ADH
Business Acquisition [Line Items]
Identifiable Intangible Assets					$ 13,300		13,260
Tangible Assets					1,500		1,497
Total Identifiable Assets							14,757
Goodwill							9,873
Purchase Consideration					$ 24,600		24,630
JLH
Business Acquisition [Line Items]
Identifiable Intangible Assets							1,301
Tangible Assets							60
Total Identifiable Assets							1,361
Goodwill							136
Purchase Consideration				$ 1,500			1,497
Mi Casa
Business Acquisition [Line Items]
Identifiable Intangible Assets			$ 3,000				2,960
Tangible Assets							59
Total Identifiable Assets							3,019
Goodwill							1,921
Purchase Consideration			$ 4,900				4,940
Harbor Rehab
Business Acquisition [Line Items]
Identifiable Intangible Assets		$ 1,600					1,642
Tangible Assets							0
Total Identifiable Assets							1,642
Goodwill							461
Purchase Consideration		$ 2,100					2,103
Brockton Stoughton ADH
Business Acquisition [Line Items]
Identifiable Intangible Assets	$ 4,000						4,000
Tangible Assets							195
Total Identifiable Assets							4,195
Goodwill							2,055
Purchase Consideration	$ 6,300						6,250
Other Acquisitions
Business Acquisition [Line Items]
Identifiable Intangible Assets							246
Tangible Assets							99
Total Identifiable Assets							345
Goodwill							7
Purchase Consideration							$ 352