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Subsequent Events (Detail Textuals) - Subsequent event - Board of Directors
May 07, 2018
$ / shares
Subsequent Event [Line Items]  
Preferred stock dividend declared, amount per share $ 0.15
Dividend declared, date May 07, 2018
Dividends payable, date to be paid May 01, 2018
Dividend, record date Apr. 11, 2018