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Description of the Business and Summary of Significant Accounting Policies - Additional Information (Details) shares in Millions, $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 USD ($) Segment shares | Sep. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) shares | Dec. 31, 2016 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |
Number of business segments | Segment | 3 |  |  |
Business Acquisition [Line Items] |  |  |  |
Unrecognized tax benefit |  |  |  | $ 10.1
Offset of valuation allowance |  |  |  | $ 10.1
Decrease in net cash used in investing activities | $ 79.5 |  | $ 48.2 |
Accounting Standards Update 2016-18 |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Adjustment to cash, cash equivalents and restricted cash beginning balance |  |  | 38.1 |
Adjustment to cash, cash equivalents and restricted cash ending balance |  |  | 38.7 |
Decrease in net cash used in investing activities |  |  | $ 0.6 |
Stock Options |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Anti-dilutive securities (in shares) | shares | 3.0 |  | 1.8 |
Restricted Stock Units |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Anti-dilutive securities (in shares) | shares | 5.0 |  | 4.6 |
DEQ Systems Corp. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Consideration transferred |  | $ 22.0 |  |

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