Consolidated Statements of Stockholders' Equity, Series A and Series B Convertible Preferred Stock - USD ($) shares in Thousands, $ in Thousands	Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Treasury Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Series A Convertible Preferred Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Series B Convertible Preferred Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Series B Preferred Stock [Member] Common Stock [Member]	Series B Preferred Stock [Member] Treasury Stock [Member]	Series B Preferred Stock [Member] Additional Paid-in Capital [Member]	Series B Preferred Stock [Member] Retained Earnings [Member]	Series B Preferred Stock [Member] Series A Convertible Preferred Stock [Member]	Series B Preferred Stock [Member] Series B Convertible Preferred Stock [Member]	Series B Preferred Stock [Member]	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]	Total
Balance (in shares) (Accounting Standards Update 2016-02 [Member]) at Dec. 31, 2018	0	0
Balance (in shares) (Accounting Standards Update 2018-07 [Member]) at Dec. 31, 2018	0	0
Balance (in shares) at Dec. 31, 2018															106,856	6
Balance (Accounting Standards Update 2016-02 [Member]) at Dec. 31, 2018	$ 0	$ 0	$ 0	$ (213)	$ 0	$ 0	$ (213)
Balance (Accounting Standards Update 2018-07 [Member]) at Dec. 31, 2018	$ 0	$ 0	$ 2,116	$ 0	$ 0	$ 0	$ 2,116
Balance at Dec. 31, 2018															$ 11	$ (35)	$ 180,862	$ (97,617)	$ 40,091	$ 26,159	$ 83,221
Share-based compensation															$ 0	$ 0	(8,525)	0	0	0	(8,525)
Restricted stock vesting (in shares)															510	0
Restricted stock vesting															$ 0	$ 0	495	0	0	0	495
Issuance of stock (in shares)															10,094	0
Issuance of stock								$ 0	$ 0	$ 0	$ 0	$ 0	$ 19,009	$ 0	$ 1	$ 0	61,824	0	0	0	61,825
Shares repurchased related to share-based compensation (in shares)															(131)	131
Shares repurchased related to share-based compensation															$ 0	$ (650)	0	0	0	0	(650)
Preferred stock dividends															0	0	(11,164)	0			(11,164)
Preferred stock dividends																			6,476	4,646	11,164
Deemed dividends - accretion of beneficial conversion feature															0	0	(1,517)	0	1,517	0	(1,517)
Net Loss															$ 0	$ 0	0	(35,871)	0	0	(35,871)
Balance (in shares) at Dec. 31, 2019															117,329	137
Balance at Dec. 31, 2019															$ 12	$ (685)	224,091	(133,701)	48,084	49,814	89,717
Share-based compensation															$ 0	$ 0	(155)	0	0	0	(155)
Restricted stock vesting (in shares)															612	0
Restricted stock vesting															$ 0	$ 0	0	0	0	0	0
Shares repurchased related to share-based compensation (in shares)															(112)	112
Shares repurchased related to share-based compensation															$ 0	$ (346)	0	0	0	0	(346)
Preferred stock dividends															0	0	(14,327)	0			(14,327)
Preferred stock dividends																			7,310	6,967	14,327
Deemed dividends - accretion of beneficial conversion feature															0	0	(128)	0	128	0	(128)
Net Loss															$ 0	$ 0	0	(14,329)	0	0	(14,329)
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