Distributions (Details) - USD ($) $ / shares in Units, $ in Thousands											3 Months Ended		9 Months Ended
	Jan. 27, 2021	Jan. 07, 2021	Nov. 06, 2020	Oct. 19, 2020	Jul. 16, 2020	Jul. 13, 2020	Apr. 10, 2020	Mar. 31, 2020	Jan. 10, 2020	Jan. 02, 2020	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020	Jan. 28, 2021	Nov. 03, 2020	Aug. 25, 2020
Distributions [Abstract]
Disallowed or cancelled claims, cash released from restricted cash account											$ 47	$ 749	$ 379	$ 826
Amount received from distribution checks returned or not cashed											$ 197	37	$ 431	149
All Net Note Claims [Member]
Distributions [Abstract]
Interest, fixed rate											10.00%		10.00%
Class A [Member]
Distributions [Abstract]
Preferential distributions payable per interest (in dollars per share)											$ 75.00		$ 75.00
Distributions declared		$ 50,005		$ 29,957		$ 29,934		$ 25,000		$ 53,426
Distributions declared per interest (in dollars per share)		$ 4.28		$ 2.56		$ 2.56		$ 2.12		$ 4.50
Initial distributions paid	$ 48,665		$ 29,204		$ 29,201		$ 24,193		$ 51,188		$ 229	$ 495	$ 351	$ 606
Deposit made into restricted cash account for distributions							$ 807		$ 2,238						$ 1,340	$ 753	$ 733
Class B [Member]
Distributions [Abstract]
Preferential distributions payable per interest (in dollars per share)											$ 75.00		$ 75.00
Subordinated preferential distributions payable per interest (in dollars per share)											$ 75.00		$ 75.00