Leases - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Leases [Abstract]
Discount rate	4.36%		4.36%		4.36%
Current lease liabilities	$ 5,000,000		$ 5,000,000		$ 5,000,000
Non-current lease liabilities	$ 17,000,000		$ 17,000,000		$ 18,000,000
Remaining lease term	7 years 6 months 14 days	7 years 29 days	7 years 6 months 14 days	7 years 29 days
Operating expense	$ 2,000,000	$ 2,000,000	$ 3,000,000	$ 3,000,000
Short term operating lease expense	$ 0	$ 0	0	0
New ROU assets			$ 1,000,000	$ 8,000,000