Shareholders' Equity - Preferred Stock (Details) - shares	Jun. 30, 2020	Dec. 31, 2019	Jun. 11, 2019	Sep. 12, 2018
Preferred Stock
Class of Stock [Line Items]
Preferred Stock, shares issued	625,000	625,000
Preferred Stock, shares outstanding	625,000	625,000
Series B Preferred Stock
Class of Stock [Line Items]
Preferred Stock, shares issued	300,000	300,000	300,000
Preferred Stock, shares outstanding	300,000	300,000
Series A Preferred Stock
Class of Stock [Line Items]
Preferred Stock, shares issued	325,000	325,000		325,000
Preferred Stock, shares outstanding	325,000	325,000