Soliciting Material Soliciting Material Written Communications Written Communications Series C Preferred Stock [Member] Series C Preferred Stock [Member] Document [Domain] Document [Domain] Local Phone Number Local Phone Number Class of Stock [Domain] Class of Stock [Domain] Document Information [Line Items] Document Information [Line Items] Amendment Flag Amendment Flag Entity Emerging Growth Company Entity Emerging Growth Company Series E Preferred Stock Series E Preferred Stock [Member] Entity File Number Entity File Number Series A Preferred Stock [Member] Series A Preferred Stock [Member] Security Exchange Name Security Exchange Name Entity Address, State or Province Entity Address, State or Province Entity Address, Address Line One Entity Address, Address Line One City Area Code City Area Code Cover [Abstract] Cover [Abstract] Document Period End Date Document Period End Date Document Information [Table] Document Information [Table] Series D Preferred Stock Series D Preferred Stock [Member] Pre-commencement Tender Offer Pre-commencement Tender Offer Class of Stock [Axis] Class of Stock [Axis] Entity Central Index Key Entity Central Index Key Document Information, Document [Axis] Document Information, Document [Axis] Pre-commencement Issuer Tender Offer Pre-commencement Issuer Tender Offer Entity Tax Identification Number Entity Tax Identification Number Entity Registrant Name Entity Registrant Name Junior Subordinated Debt Junior Subordinated Debt [Member] Trading Symbol Trading Symbol Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Title of 12(b) Security Title of 12(b) Security Series B Preferred Stock [Member] Series B Preferred Stock [Member] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Address, City or Town Entity Address, City or Town Document Type Document Type