SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)		3 Months Ended		12 Months Ended
	Jul. 01, 2019 USD ($) contract	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2019 USD ($)
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue recorded from inventory builds		$ 500,000	$ 400,000
Solutions sold that were held in vendor managed inventory		1,700,000		$ 1,900,000
Deferred tax liability		300,000
Deferred tax liability related to effect of indefinite lived assets		400,000
Deferred tax assets associated with alternative minimum tax credits		100,000
Operating lease liability		8,672,000
Operating lease, ROU asset		$ 8,542,000
Number of operating leases | contract	50
Goodwill impairment				$ 0
ASU 2016-02
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Operating lease liability	$ 4,600,000
Operating lease, ROU asset	$ 4,600,000