Commitments and Contingencies (Details) $ in Millions	Dec. 31, 2019 USD ($) Individual	Dec. 31, 1998 Individual
Loss Contingency [Abstract]
Number of individuals with benefits \| Individual	2	3
Supplemental unemployment benefits, severance benefits \| $	$ 5.5

Liability for amount due employees, in addition to wages and any other money that employers owe employees, when their employment ends through a layoff or other termination. For example, a company may provide involuntarily terminated employees with a lump sum payment equal to one week's salary for every year of employment.

No definition available.

Name:	us-gaap_SupplementalUnemploymentBenefitsSeveranceBenefits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant