Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Details)

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Subsequent Events (Details) - Arden Companies - Subsequent Event - USD ($)
$ in Millions
1 Months Ended
Feb. 28, 2019
Feb. 01, 2019
Subsequent Event [Line Items]    
Percent of investment purchased   55.00%
Payments to acquire investments $ 13.4  
Payment for acquired debt extinguishment $ 40.0