Income Taxes - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018
Operating Loss Carryforwards [Line Items]
Adjustment of deferred tax (asset) liability	$ 5.4
Unrecognized tax benefits that would impact effective tax rate		$ 0.7
State
Operating Loss Carryforwards [Line Items]
State tax net operating losses		$ 3.4