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Equity (Details)
$ / shares in Units, $ in Thousands
6 Months Ended
Jun. 30, 2020
USD ($)
$ / shares
May 5, 2020 [Member]  
Class of Stock [Line Items]  
Declaration Date May 05, 2020
Series 2012-A Preferred Stock (Preferred Stock) [Member] | January 16, 2019 [Member]  
Class of Stock [Line Items]  
Declaration Date Jan. 08, 2020
Dividend Per Share $ 0.1594
Aggregate Dividend Amount | $ $ 370
Record Date Feb. 06, 2020
Payment Date Feb. 15, 2020
Series 2012-A Preferred Stock (Preferred Stock) [Member] | May 4, 2020 [Member]  
Class of Stock [Line Items]  
Declaration Date May 04, 2020
Series 2012-A Preferred Stock (Preferred Stock) [Member] | May 15, 2020 [Member]  
Class of Stock [Line Items]  
Declaration Date May 15, 2020
Series 2012-A Preferred Stock (Preferred Stock) [Member] | April 22, 2020 [Member]  
Class of Stock [Line Items]  
Declaration Date Apr. 22, 2020
Dividend Per Share $ 0.1594
Aggregate Dividend Amount | $ $ 370
Class A Common Stock and Class B Common Stock [Member]  
Class of Stock [Line Items]  
Declaration Date May 19, 2020
Class A Common Stock and Class B Common Stock [Member] | March 7, 2019 [Member]  
Class of Stock [Line Items]  
Declaration Date Mar. 11, 2020
Dividend Per Share $ 0.0750
Aggregate Dividend Amount | $ $ 1,975
Record Date Mar. 24, 2020
Payment Date Apr. 03, 2020
Class A Common Stock and Class B Common Stock [Member] | May 5, 2020 [Member]  
Class of Stock [Line Items]  
Declaration Date
Dividend Per Share $ 0.0850
Class A Common Stock and Class B Common Stock [Member] | May 29, 2020 [Member]  
Class of Stock [Line Items]  
Declaration Date May 29, 2020