Shareholders' Equity (Details)	1 Months Ended
May 31, 2018 $ / shares shares
Shareholders' Equity [Abstract]
Shares issued to non-qualified defined contribution retirement plans (in shares) \| shares	8,769
Share price of shares issued (in dollars per share) \| $ / shares	$ 635

Number of shares issued during the period to an employee benefit plan, such as a defined contribution or defined benefit plan.

No definition available.

Name:	us-gaap_StockIssuedDuringPeriodSharesEmployeeBenefitPlan
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration