Income Taxes (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)
Income Tax Disclosure [Abstract]
Gross unrecognized tax benefits	$ 1,100,000	$ 1,100,000
Unrecognized tax benefits	1,100,000.0	1,100,000.0
Interest and penalties recognized in income tax expense		100,000
Current income tax expense (benefit)	$ 700,000	$ 8,100,000