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Fair value measurements (Tables)
6 Months Ended
Jun. 30, 2019
Fair Value Disclosures [Abstract]  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
The following table summarizes investments that are recognized in our consolidated balance sheet using fair value measurements (excluding investments classified as equity method investments) determined based upon the differing levels as of June 30, 2019:
 
Level 1
Level 2
Level 3
Total
Cash equivalents
$
108,761,910

$

$

$
108,761,910

Fair value investments
 
 
 
 
     Securities held in Consolidated Funds(a)
16,344,662

66,904,583


$
83,249,245

     Company sponsored investments
22,859,833



$
22,859,833

(a) Of the securities held in the Consolidated Funds as of June 30, 2019, $50.5 million were held directly by the Company and $32.8 million were held by noncontrolling shareholders.