Trade and Other Receivables, Net (Tables)

12 Months Ended

Dec. 31, 2020

Receivables [Abstract]

Schedule of Trade and Other Receivables, Net

Trade and other receivables, net, consist of the following:

	December 31,
	2020			2019
	(Dollars in millions)
Trade receivables from customers	$	95.1		$	75.7
Interest receivable from invested customer trust funds		1.8			1.3
Other		11.7			9.5
Total gross receivables		108.6			86.5
Less: reserve for sales adjustments		(4.4	)		(3.7	)
Less: allowance for doubtful accounts		(3.1	)		(2.4	)
Trade and other receivables, net	$	101.1		$	80.4

Activity Related to Allowance for Doubtful Accounts

The activity related to the allowance for doubtful accounts was as follows:

	Year Ended December 31,
	2020			2019			2018
	(Dollars in millions)
Balance at beginning of year	$	2.4		$	1.3		$	1.3
Provision for doubtful accounts		2.0			3.2			0.7
Charge-offs, net of recoveries		(1.3	)		(2.1	)		(0.7	)
Balance at end of year	$	3.1		$	2.4		$	1.3