Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets

Schedule of changes in carrying amount of goodwill

Changes in the carrying amount of goodwill were as follows (in millions):

	Amount
Balance, December 31, 2015	$	—
Acquired		1.6
Impaired		—
Balance, December 31, 2016		1.6
Acquired		7.4
Impaired		—
Balance, December 31, 2017	$	9.0

Schedule of definite lived intangible assets

Definite lived intangible assets are comprised of the following (in millions):

	Estimated
	Useful Life	December 31,		December 31,
	(years)	2017		2016
Tradenames	3	$	0.1	$	0.1
Customer relationships	15 - 18		11.4		9.2
Less: accumulated amortization			(0.7)		(0.1)
Intangible assets, net		$	10.8	$	9.2

Schedule of aggregated amortization expense for future periods

Amortization expense for the future periods is expected to be as follows (in millions):

As of December 31,	Amount
2018	$	0.6
2019		0.6
2020		0.6
2021		0.6
2022		0.6
Thereafter		7.8
	$	10.8