Defined Contribution Plan (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) age	Dec. 31, 2017 USD ($)
Defined Contribution Plan Disclosure [Line Items]
Minimum age of employee to cover under the plan | age	21
Employee compensation deferred percentage	100.00%
Employer match of employee contributions of eligible compensation	100.00%
Percentage of compensation matched by employer	3.00%
Employer match of over all employee contributions of eligible compensation	50.00%
Percentage of employee contribution vested on their contribution	100.00%
Employer matches vesting period	6 years
Amount of discretionary matching contributions on employee deferrals | $	$ 0.1	$ 0.0
Maximum
Defined Contribution Plan Disclosure [Line Items]
Percentage of compensation matched by employer	5.00%