Long-Lived Assets (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Total amortization expense	$ 6.9	$ 5.9
Estimated total amortization expense 2017	25.6
Estimated total amortization expense 2018	19.9
Estimated total amortization expense 2019	13.4
Estimated total amortization expense 2020	6.9
Estimated total amortization expense 2021	$ 3.0