ACQUISITIONS - Advantage RN (Details) - USD ($) $ in Millions			3 Months Ended	12 Months Ended
	Jul. 28, 2017	Jul. 01, 2017	Sep. 30, 2017	Jun. 30, 2018
Advantage RN, LLC [Member]
Business Acquisition [Line Items]
Cash consideration		$ 86.6
Net working capital adjustment		0.6
Reimbursement from working capital adjustment settled			$ 0.8
Contingent liability				$ 0.2
Release of remaining contingent liability				$ 0.4
Escrow payment related to tax liabilities		14.5
Escrow payment related to post-close liabilities		7.5
Release of escrow to seller	$ 7.3
Escrow deposit related to tax liabilities	$ 7.2
Consideration transferred, available cash		19.9
Deferred Consideration Transferred [Member] | Advantage RN, LLC [Member]
Business Acquisition [Line Items]
Contingent liability		$ 0.6
Period of deferred consideration		20 months
Credit Agreement [Member]
Business Acquisition [Line Items]
Borrowings on debt		$ 66.9
Term Loan [Member] | Incremental Term Loan [Member]
Business Acquisition [Line Items]
Borrowings on debt		40.0
Purchase Price [Member] | Advantage RN, LLC [Member]
Business Acquisition [Line Items]
Purchase price		$ 88.0