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Preferred Stock - Schedule of Preferred Stock (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Auction Market Preferred Securities, Stock Series [Line Items]    
Preferred Stock, Shares Authorized (shares) 500,000 500,000
Preferred stock, par value (in US$ per share) $ 1 $ 1
Preferred Stock, Value, Outstanding $ 15 $ 15
Liquidation preference $ 15,761 $ 15,624
Series A Preferred Stock [Member]    
Auction Market Preferred Securities, Stock Series [Line Items]    
Preferred Stock, Shares Authorized (shares) 21,000,000  
Preferred stock, issued (in shares) 14,700,000  
Preferred stock, par value (in US$ per share) $ 1,072  
Preferred Stock, Value, Outstanding $ 15,761  
Cumulative Dividends 1,061  
Liquidation preference $ 15,761