Preferred Stock - Schedule of Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	Mar. 31, 2021	Jun. 30, 2020	Oct. 02, 2017
Equity [Abstract]
Preferred Stock, Shares Authorized (in shares)	500,000	500,000
Preferred stock, issued (in shares)	14,700	14,700
Preferred stock, par value (in US$ per share)	$ 1.00	$ 1.00
Preferred Stock, Value, Issued	$ 15	$ 15
Liquidation preference	$ 16,607	$ 16,178
Auction Market Preferred Securities, Stock Series [Line Items]
Preferred Stock, Shares Authorized (in shares)	500,000	500,000
Preferred stock, issued (in shares)	14,700	14,700
Preferred stock, par value (in US$ per share)	$ 1.00	$ 1.00
Preferred Stock, Value, Issued	$ 15	$ 15
Liquidation preference	$ 16,607	$ 16,178
Preferred Class A [Member]
Equity [Abstract]
Preferred Stock, Shares Authorized (in shares)	21,000	21,000
Preferred stock, issued (in shares)			14,700
Auction Market Preferred Securities, Stock Series [Line Items]
Preferred Stock, Shares Authorized (in shares)	21,000	21,000
Preferred stock, issued (in shares)			14,700