XML 67 R56.htm IDEA: XBRL DOCUMENT v3.19.1
DIVIDENDS (Details) - USD ($)
12 Months Ended
Jan. 18, 2019
Oct. 23, 2018
Jul. 20, 2018
Apr. 24, 2018
Jan. 19, 2018
Oct. 20, 2017
Jul. 20, 2017
Apr. 24, 2017
Jan. 06, 2017
Oct. 20, 2016
Jul. 28, 2016
Apr. 21, 2016
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dividends                              
Preferred dividends declared                         $ 55,113 $ 55,113 $ 55,113
Series I, Class B                              
Dividends                              
Preferred dividends declared $ 12,313 $ 12,313 $ 12,313 $ 12,313 $ 12,313 $ 12,313 $ 12,313 $ 12,313 $ 12,313 $ 12,313 $ 12,313 $ 12,313      
Series II, Class B                              
Dividends                              
Preferred dividends declared $ 42,800 $ 42,800 $ 42,800 $ 42,800 $ 42,800 $ 42,800 $ 42,800 $ 42,800 $ 42,800 $ 42,800 $ 42,800 $ 42,800