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Business Combinations, Goodwill and Intangible Assets (Tables) | 12 Months Ended
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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 Goodwill 1 |  | 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 |
____________________ 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 |

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- Definition Tabular disclosure of the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed. May include but not limited to the following: (a) acquired receivables; (b) contingencies recognized at the acquisition date; and (c) the fair value of noncontrolling interests in the acquiree. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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