Fair Value Fair Value (Details Textuals) - 2016 Acquisitions [Member] $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Finite-lived intangible assets resulting from acquisitions	$ 23.2
Intangible Assets [Member] | Fair Value, Inputs, Level 3 [Member] | Minimum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate	14.00%
Intangible Assets [Member] | Fair Value, Inputs, Level 3 [Member] | Maximum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate	17.50%
Deferred Revenue [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate	3.50%
Fair Value Inputs, Estimated Profit Rate	14.50%