Software Development Costs, Net

6 Months Ended

Jun. 30, 2019

Research and Development [Abstract]

Software Development Costs, net

6. Software Development Costs, net

Software development costs, net consisted of the following:

	June 30, 2019			September 30, 2018
		(in millions)
Software development costs	$	109.3		$	100.9
Less: accumulated amortization		(71.2	)		(60.9	)
	$	38.1		$	40.0

During the three months ended June 30, 2019 and 2018, the Company capitalized $3.7 million and $4.4 million of software development costs, respectively. During the six months ended June 30, 2019 and 2018, the Company capitalized $7.4 million and $8.8 million of software development costs, respectively. Amounts in the above table include $1.0 million and $1.3 million of internal use software at June 30, 2019 and September 30, 2018, respectively.

The total amount of software costs amortized was $3.9 million and $4.4 million for the three months ended June 30, 2019 and 2018, respectively, and $8.0 million and $9.0 million for the six months ended June 30, 2019 and 2018, respectively. Software costs written down to net realizable value amounted to $0.0 million for the three months ended June 30, 2019 and 2018, respectively, and $0.0 million and $0.3 million for the six months ended June 30, 2019 and 2018, respectively. The weighted average amortization period was 3.1 years for the three and six months ended June 30, 2019 and 3.2 years for the three and six months ended June 30, 2018.

The estimated software amortization expense for the years ending December 31 are as follows:

Year ending December 31, (in millions)
2019 (six months)	$	7.7
2020		14.1
2021		9.2
2022		4.4
2023		2.0
Thereafter		0.7
Total	$	38.1