Consolidated Statement of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Series A Preferred Stock	Series B Preferred Stock	Preferred Stock Series A Preferred Stock	Preferred Stock Series B Preferred Stock	Common Stock	Total Additional Paid-in Capital	Total Additional Paid-in Capital Series A Preferred Stock	Total Additional Paid-in Capital Series B Preferred Stock	Accumulated Deficit	Accumulated Deficit Series A Preferred Stock	Accumulated Deficit Series B Preferred Stock	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2016				2,181	5,650	36,723
Beginning balance at Dec. 31, 2016	$ 1,092,065			$ 2	$ 6	$ 37	$ 2,560,242			$ (1,439,088)			$ (29,134)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred dividends		$ (4,498)	$ (11,382)								$ (4,498)	$ (11,382)
Common stock dividends	(89,409)									(89,409)
Issuance of Series B Preferred stock, net (in shares)					612
Issuance of Series B Preferred stock, net			14,968						$ 14,968
Issuance of common stock, net (in shares)						5,119
Issuance of common stock, net	133,193					$ 5	133,188
Stock based compensation, net of withholding requirements (in shares)						35
Stock based compensation, net of withholding requirements	937						937
Net Income (Loss)	181,154									181,154
Other comprehensive income (loss)	9,023												9,023
Ending balance (in shares) at Dec. 31, 2017				2,181	6,262	41,877
Ending balance at Dec. 31, 2017	1,326,051			$ 2	$ 6	$ 42	2,709,335			(1,363,223)			(20,111)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred dividends		(4,498)	(12,534)								(4,498)	(12,534)
Common stock dividends	(97,024)									(97,024)
Issuance of Series B Preferred stock, net (in shares)					107
Issuance of Series B Preferred stock, net	2,632						2,632
Issuance of common stock, net (in shares)						1,723
Issuance of common stock, net	38,014					$ 2	38,012
Stock based compensation, net of withholding requirements (in shares)						102
Stock based compensation, net of withholding requirements	2,397						2,397
Net Income (Loss)	(105,966)									(105,966)
Other comprehensive income (loss)	(23,759)												(23,759)
Ending balance (in shares) at Dec. 31, 2018				2,181	6,369	43,702
Ending balance at Dec. 31, 2018	1,125,313			$ 2	$ 6	$ 44	2,752,376			(1,583,245)			(43,870)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred dividends		(2,249)	$ (13,385)								$ (2,249)	$ (13,385)
Common stock dividends	(124,477)									(124,477)
Preferred stock, called for redemption (in shares)				(2,181)
Series A Preferred stock, called for redemption		$ (54,514)		$ (2)				$ (54,512)
Issuance of Series B Preferred stock, net (in shares)					2,014
Issuance of Series B Preferred stock, net	49,795				$ 2				$ 49,793
Issuance of common stock, net (in shares)						16,064
Issuance of common stock, net	321,860					$ 16	321,844
Stock based compensation, net of withholding requirements (in shares)						111
Stock based compensation, net of withholding requirements	2,694						2,694
Common stock repurchased (in shares)						(1,000)
Common stock repurchased	(17,768)					$ (1)	(17,767)
Net Income (Loss)	(249,905)									(249,905)
Other comprehensive income (loss)	399,343												399,343
Ending balance (in shares) at Dec. 31, 2019				0	8,383	58,877
Ending balance at Dec. 31, 2019	$ 1,436,707			$ 0	$ 8	$ 59	$ 3,054,604			$ (1,973,437)			$ 355,473