Commitments and Contingencies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Purchase commitment, amount	$ 19.6	$ 24.0
Outstanding letters of credit	$ 16.7
Majority of standby letters of credit maturity period	1 year