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Acquisitions - Tonka Water (Details) - USD ($) $ in Millions | Sep. 01, 2017 | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Assets Acquired [Abstract] |  |  |  |
Goodwill |  |  | $ 148.5 | $ 148.3
Tonka Water [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Percentage of Voting Interests Acquired |  | 100.00% |  |
Name of Acquired Entity |  | Tonka Water |  |
Total Consideration |  | $ 19.2 |  |
Cash Payment to Acquire Business |  | 19.0 |  |
Working Capital Adjustment Paid in the Fourth Quarter 2017 |  | 0.2 |  |
Assets Acquired [Abstract] |  |  |  |
Accounts Receivable |  | 5.1 |  |
Other Current Assets |  | 5.1 |  |
Trade Names | [1] | 0.9 |  |
Goodwill | [1],[2] | 16.9 |  |
Other Non-Current Assets |  | 0.2 |  |
Total Assets Acquired |  | 28.2 |  |
Liabilities Assumed [Abstract] |  |  |  |
Current Liabilities |  | 9.0 |  |
Total Liabilities Assumed |  | 9.0 |  |
Net Identifiable Assets Acquired |  | 19.2 |  |
Tax Deductible Goodwill |  | $ 4.1 |  |
[1] | Presented within Goodwill and Intangible Assets – Net on the Consolidated Balance Sheet. (See Note 4. Goodwill and Intangible Assets.)
[2] | Recognized goodwill is attributable to the assembled workforce and anticipated synergies. For tax purposes, the purchase price allocation resulted in $4.1 million of deductible goodwill.

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