Consolidated Statement of Stockholders' Equity (Unaudited) (Parenthetical)		9 Months Ended	12 Months Ended
Jan. 28, 2020	Sep. 30, 2020	Dec. 31, 2019
Series B Preferred Stock
Preferred stock, dividend rate		7.875%	7.875%
Series C Preferred Stock
Preferred stock, dividend rate	7.00%	7.00%

The percentage rate used to calculate dividend payments on preferred stock.

No definition available.

Name:	us-gaap_PreferredStockDividendRatePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration