Business Combinations, Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The following table summarizes recognized amounts of identifiable assets acquired and liabilities assumed at the acquisition date (in millions of dollars):

Cash	$	0.9
Accounts receivable	2.6
Prepaid expenses and other current assets	0.6
Inventory	2.9
Property, plant and equipment	4.1
Identifiable intangible assets with definite lives	9.2
Goodwill	25.2
Accounts payable and other current liabilities	(1.4		)
Total purchase price	44.1
Less: cash acquired	(0.9		)
Purchase price, net of cash acquired	$	43.2

Schedule of Goodwill

Goodwill. The following table presents the changes to goodwill during the year ended December 31, 2018 (in millions of dollars):

	December 31, 2017			Increase to Goodwill1		December 31, 2018
Goodwill	$	37.2		$	25.2	$	62.4
Accumulated impairment loss	(18.4		)	—		(18.4		)
Carrying value	$	18.8		$	25.2	$	44.0

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¹ 

The goodwill of $25.2 million arising from the acquisition of IMT after allocating the consideration paid, net of cash received, to all other identifiable assets is expected to be deductible for income tax purposes over the next 15 years.

Schedule of Finite-Lived Intangible Assets [Table Text Block]

Intangible Assets. Information regarding our intangible assets consisted of the following as of each period presented (in millions of dollars, except amortization periods):

	Weighted-Average Amortization Period (in years)	Gross Amount		Accumulated Amortization			Intangible Assets, Net
December 31, 2018
Customer relationships	24	$	36.1	$	(11.1	)	$	25.0
Trade name	10	2.4		(0.1		)	2.3
Non-compete agreement	5	5.4		(0.3		)	5.1
Total		$	43.9	$	(11.5	)	$	32.4
December 31, 2017
Customer relationships	25	$	34.7	$	(9.7	)	$	25.0
Total		$	34.7	$	(9.7	)	$	25.0

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Amortization expense relating to definite-lived intangible assets was $1.8 million for 2018, $1.4 million for 2017, and $1.5 million for 2016. The expected amortization of intangible assets for each of the next five calendar years is as follows (in millions of dollars):

2019	$	2.8
2020	2.8
2021	2.8
2022	2.8
2023	2.6
Thereafter	18.6
Total	$	32.4