Soliciting Material Soliciting Material Written Communications Written Communications Local Phone Number Local Phone Number Class of Stock [Domain] Class of Stock [Domain] Amendment Flag Amendment Flag Entity Emerging Growth Company Entity Emerging Growth Company Entity File Number Entity File Number 7.75% Series A Cumulative Redeemable Preferred Stock, Liquidation Preference $25.00 per share 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 7.125% notes due 2027 Notes 7. 125 Percent Due 2027 [Member] Notes 7. 125 Percent Due 2027 [Member] Cover [Abstract] Document Period End Date Document Period End Date 8.00% notes due 2027 Notes 8. 00percent Due 2027 [Member] Notes 8. 00percent Due 2027 [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 Pre-commencement Issuer Tender Offer Pre-commencement Issuer Tender Offer Entity Tax Identification Number Entity Tax Identification Number Statement [Line Items] Statement [Line Items] 6.00% notes due 2026 Notes 6. 00percent Due 2026 [Member] Notes 6. 00percent Due 2026 [Member] Entity Registrant Name Entity Registrant Name Trading Symbol Trading Symbol Notes 7. 75percent Due 2025 [Member] Notes 7. 75percent Due 2025 [Member] Notes 7. 75percent Due 2025 [Member] 6.00% notes due 2027 Notes 6. 00percent Due 2027 [Member] Notes 6. 00percent Due 2027 [Member] Statement [Table] Statement [Table] Common Shares, par value $.001 per share Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Title of 12(b) Security Title of 12(b) Security Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Address, City or Town Entity Address, City or Town Document Type Document Type