XML 131 R104.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Related Party Transactions (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Other Assets      
Related Party Transaction [Line Items]      
Investment $ 7,700    
Ownership (percent) 23.00%    
Related Party Fund      
Related Party Transaction [Line Items]      
Purchased $ 77 $ 6,600 $ 53,300
Related Party Fund | Affiliated Entity      
Related Party Transaction [Line Items]      
Interest paid 778 2,900 7,400
Related Party Fund | Investor Fees | Affiliated Entity      
Related Party Transaction [Line Items]      
Fees earned $ 93 $ 262 $ 734