Consolidated Statements of Stockholders' Equity and Convertible Preferred Stock - USD ($) shares in Thousands, $ 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	249
Balance at Dec. 31, 2020	$ 12	$ (1,031)	$ 209,481	$ (148,030)	$ 55,522	$ 56,781		$ 60,432
Share-based compensation			(4,541)					(4,541)
Restricted stock vesting (in shares)	660
Shares repurchased related to share-based compensation (in shares)	(97)	97
Shares repurchased related to share-based compensation		$ (284)						(284)
Issuance of common stock, net (in shares)	163
Issuance of common stock, net			316				$ 37,807	316
Stock dividend (in shares)	798
Exercise of common stock warrants (in shares)	1,485
Exercise of common stock warrants			4,365					4,365
Preferred stock dividends			(18,294)		8,206	7,821	2,200	(18,294)
Deemed dividends - accretion of beneficial conversion feature			(63)		63			(63)
Net Loss				(22,039)				(22,039)
Balance (in shares) at Dec. 31, 2021	120,838	346
Balance at Dec. 31, 2021	$ 12	$ (1,315)	191,264	(170,069)	63,791	64,602	40,007	19,892
Share-based compensation			7,472					7,472
Restricted stock vesting (in shares)	2,763
Shares repurchased related to share-based compensation (in shares)	(645)	645
Shares repurchased related to share-based compensation		$ (3,272)						(3,272)
Issuance of common stock, net (in shares)	20,073
Issuance of common stock, net	$ 2		111,066				9,836	$ 111,068
Exercise of common stock warrants (in shares)	520							500
Exercise of common stock warrants			3,564					$ 3,564
Preferred stock dividends			(24,282)		9,235	8,806	6,166	(24,282)
Net Loss				(60,071)				(60,071)
Balance (in shares) at Dec. 31, 2022	143,549	991
Balance at Dec. 31, 2022	$ 14	$ (4,587)	$ 289,084	$ (230,140)	$ 73,026	$ 73,408	$ 56,009	$ 54,371