Intangible Assets and Goodwill - Intangible Asset Analysis (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Jan. 23, 2017
Acquired Finite-Lived Intangible Assets [Line Items]
Other Intangibles	$ 0.0	$ 29.7
Income approach valuation technique | Finite-Lived Intangible Assets
Acquired Finite-Lived Intangible Assets [Line Items]
Discounted forecasted cash flow period		10 years
Discount rate		16.00%
Minimum | Income approach valuation technique | Finite-Lived Intangible Assets
Acquired Finite-Lived Intangible Assets [Line Items]
Terminal growth rates		0.00%
Maximum | Income approach valuation technique | Finite-Lived Intangible Assets
Acquired Finite-Lived Intangible Assets [Line Items]
Terminal growth rates		3.00%
Subsequent Event
Acquired Finite-Lived Intangible Assets [Line Items]
Noncontrolling interest, percentage held by noncontrolling owners			50.00%
NXSN Acquisition Corp. | Subsequent Event
Acquired Finite-Lived Intangible Assets [Line Items]
Notes receivable			$ 25.0