Consolidated Statement of Stockholders' Equity and Convertible Preferred Stock (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Series A Convertible Preferred Stock [Member]	Series B Convertible Preferred Stock [Member]	Series C Convertible Preferred Stock [Member]	Total
Balance (in shares) at Dec. 31, 2020	117,829,000	249,000
Balance at Dec. 31, 2020	$ 12	$ (1,031)	$ 209,481	$ (148,030)	$ 55,522	$ 56,781	$ 0	$ 60,432
Share-based compensation			(5,799)					(5,799)
Restricted stock vesting (in shares)	590,000
Shares repurchased related to share-based compensation (in shares)	(95,000)	95,000
Shares repurchased related to share-based compensation		$ (279)						(279)
Issuance of common stock, net (in shares)	116,000
Issuance of common stock, net			151				37,807	151
Preferred stock dividends			(13,015)		6,045	5,761	1,159	(13,015)
Net income	$ 0	$ 0	0	(14,016)	0	0	0	(14,016)
Balance (in shares) at Sep. 30, 2021	120,723,000	344,000
Balance at Sep. 30, 2021	$ 12	$ (1,310)	195,136	(162,046)	61,614	62,542	38,966	31,792
Exercise of common stock warrants (in shares)	1,485,000	0
Exercise of common stock warrants	$ 0	$ 0	4,365	0	0	0	0	4,365
Stock dividend (in shares)	798,000	0
Deemed dividends - accretion of beneficial conversion feature	$ 0	$ 0	(47)	0	47	0	0	(47)
Balance (in shares) at Jun. 30, 2021	118,482,000	300,000
Balance at Jun. 30, 2021	$ 12	$ (1,171)	199,553	(163,268)	59,509	60,549	33,173	35,126
Share-based compensation			(3,653)					(3,653)
Restricted stock vesting (in shares)	285,000
Shares repurchased related to share-based compensation (in shares)	(44,000)	44,000
Shares repurchased related to share-based compensation		$ (139)						(139)
Issuance of common stock, net (in shares)	116,000
Issuance of common stock, net			151				4,634	151
Preferred stock dividends			(5,264)		2,089	1,993	1,159	(5,264)
Net income	$ 0	$ 0	0	1,222	0	0	0	1,222
Balance (in shares) at Sep. 30, 2021	120,723,000	344,000
Balance at Sep. 30, 2021	$ 12	$ (1,310)	195,136	(162,046)	61,614	62,542	38,966	31,792
Exercise of common stock warrants (in shares)	1,485,000	0
Exercise of common stock warrants	$ 0	$ 0	4,365	0	0	0	0	4,365
Stock dividend (in shares)	399
Deemed dividends - accretion of beneficial conversion feature	$ 0	$ 0	(16)	0	16	0	0	(16)
Balance (in shares) at Dec. 31, 2021	120,838,000	346,000
Balance at Dec. 31, 2021	$ 12	$ (1,315)	191,264	(170,069)	63,791	64,602	40,007	19,892
Share-based compensation			3,555					3,555
Restricted stock vesting (in shares)	2,293,000
Shares repurchased related to share-based compensation (in shares)	(543,000)	543,000
Shares repurchased related to share-based compensation		$ (2,812)						(2,812)
Issuance of common stock, net (in shares)	20,072,000
Issuance of common stock, net	$ 2		111,078				9,836	111,080
Preferred stock dividends			(17,777)		6,803	6,489	4,430	(17,777)
Net income	$ 0	$ 0	0	(41,146)	0	0	0	(41,146)
Balance (in shares) at Sep. 30, 2022	143,181,000	889,000
Balance at Sep. 30, 2022	$ 14	$ (4,127)	291,684	(211,215)	70,594	71,091	54,273	$ 76,356
Exercise of common stock warrants (in shares)	521,000	0						520,335
Exercise of common stock warrants	$ 0	$ 0	3,564	0	0	0	0	$ 3,564
Balance (in shares) at Jun. 30, 2022	127,254,000	742,000
Balance at Jun. 30, 2022	$ 13	$ (3,067)	213,749	(192,418)	68,259	68,863	52,604	18,277
Share-based compensation			3,041					3,041
Restricted stock vesting (in shares)	620,000
Shares repurchased related to share-based compensation (in shares)	(147,000)	147,000
Shares repurchased related to share-based compensation		$ (1,060)						(1,060)
Issuance of common stock, net (in shares)	15,454,000	0
Issuance of common stock, net	$ 1	$ 0	81,142	0	0	0	0	81,143
Preferred stock dividends			(6,248)		2,335	2,228	1,669	(6,248)
Net income	$ 0	$ 0	0	(18,797)	0	0	0	(18,797)
Balance (in shares) at Sep. 30, 2022	143,181,000	889,000
Balance at Sep. 30, 2022	$ 14	$ (4,127)	$ 291,684	$ (211,215)	$ 70,594	$ 71,091	$ 54,273	$ 76,356