Leases - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) lease	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of leases | lease	3
Operating lease cost	$ 758	$ 724	$ 711
Operating cash flows from operating leases	$ 814
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Remaining term of contract	2 years
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Remaining term of contract	4 years