Investments (Tables)

12 Months Ended

Dec. 31, 2019

Investment [Line Items]

Investments

The following table sets forth the Company’s investments:

	December 31, 2019		December 31, 2018
AdvisorEngine—Preferred stock	$	—	$	25,000
Securrency, Inc.—Preferred stock		8,112		—
Thesys—Preferred stock		3,080		3,080
Total	$	11,192	$	28,080

Thesys Group, Inc [Member]

Investment [Line Items]

Summary of Ranges and Weighted Averages of Significant Unobservable Inputs Used to Determine Enterprise Value

The table below presents the ranges and weighted averages of significant unobservable inputs used in this assessment at December 31, 2018:

	Range (Weighted Average)
Income Approach(1)
WACC		3.8% – 15.5% (14.1%)

(1) The inputs selected varied, based upon the Thesys business line being valued. An increase in the WACC would result in a lower enterprise value.