Quarterly report pursuant to Section 13 or 15(d)

Assets and Liabilities, at Fair Value (Narrative) (Details)

v3.19.3
Assets and Liabilities, at Fair Value (Narrative) (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Jun. 30, 2019
Fair Value Disclosures [Abstract]    
Redemption rate, percentage 100.00%  
Commemorative coin inventory, held at lower of cost or net realizable value $ (2,336) $ (17)