Regulatory Authorities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
EGL [Member]
Regulatory Authorities [Line Items]
Broker-Dealer, Minimum Net Capital Required, Alternative Standard	$ 250,000
Broker-Dealer, Net Capital	331,510,000	$ 331,097,000
Broker-Dealer, Excess Net Capital, Alternative Standard	331,260,000	$ 330,847,000
Evercore Trust Company [Member]
Regulatory Authorities [Line Items]
Tier One Capital	5,000,000
Minimum Liquid Assets, Amount	$ 3,500,000
Coverage of Operating Expenses (in days)	180 days