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Business Combinations and Goodwill, Narrative (Details) - USD ($) $ in Millions |  | 9 Months Ended |
--- | --- | --- | ---
Sep. 19, 2018 | Sep. 30, 2018 | Dec. 31, 2017
Business Acquisition [Line Items] |  |  |
Goodwill |  | $ 61.8 | $ 37.2
Period over which goodwill is deductible for tax |  | 15 years |
Imperial Machine and Tool Co. (''IMT'') |  |  |
Business Acquisition [Line Items] |  |  |
Accounts receivable | $ 2.7 |  |
Inventory | 3.4 |  |
Property, plant and equipment | 4.1 |  |
Identifiable intangible assets with definite lives | 9.1 |  |
Goodwill | 24.6 |  |
Accounts payable and other current liabilities | (0.6) |  |
Consideration paid, net of cash received | $ 43.3 |  |
Acquisition-related costs |  | $ 0.3 |

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- Definition The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=82851474&loc=d3e511914-122862 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10(c)(3)(ii)(A)) -URI http://asc.fasb.org/extlink&oid=82851474&loc=d3e511914-122862 + Details
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