Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2019

Receivables [Abstract]

Schedule of accounts receivable

	December 31, 2019			September 30, 2018
	(in millions)
Trade receivables	$	24.5		$	17.8
Less: long-term receivable recorded in other assets		(1.5	)		(2.2	)
Finance lease receivables		1.5			—
Receivables from affiliate		0.4			—
Other receivables		0.2			0.1
Allowance for doubtful accounts		(0.9	)		(1.4	)
Total accounts receivable, net	$	24.2		$	14.3

Schedule of changes in the allowance for doubtful accounts

	December 31, 2019			September 30, 2018
	(in millions)
Beginning balance	$	(1.5	)	$	(2.0	)
Provision for doubtful accounts		(0.1	)		(1.1	)
Recoveries		—			0.5
Write offs		0.8			1.1
Foreign currency translation adjustments		(0.1	)		0.1
Ending balance	$	(0.9	)	$	(1.4	)