Long-Lived Assets (Details Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Total amortization expense	$ 6.0	$ 6.4	$ 11.9	$ 13.3
Estimated total amortization expense 2016	23.9		23.9
Estimated total amortization expense 2017	19.4		19.4
Estimated total amortization expense 2018	14.4		14.4
Estimated total amortization expense 2019	10.4		10.4
Estimated total amortization expense 2020	$ 6.1		$ 6.1