Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization Expense	$ 0.7	$ 2.8
Expected amortization expense, remainder of year	2.4
Expected amortization expense, year 2018	2.3
Expected amortization expense, year 2019	2.3
Expected amortization expense, year 2020	2.3
Expected amortization expense, year 2021	$ 2.3
Intangible assets, weighted average useful life	8 years 6 months