Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Total
March 31, 2020 at Dec. 31, 2019		$ 10	$ 137,326	$ (119,739)	$ (13,764)	$ 3,833
Shares, Issued, Beginning Balance at Dec. 31, 2019		10,586,170
Net income				(137)		(137)
Stock based compensation			12			12
Shares, Issued, Ending Balance at Mar. 31, 2020		10,586,170
September 30, 2020 at Mar. 31, 2020		$ 10	137,338	(119,876)	(13,764)	3,708
March 31, 2020 at Dec. 31, 2019		$ 10	137,326	(119,739)	(13,764)	3,833
Shares, Issued, Beginning Balance at Dec. 31, 2019		10,586,170
Net income						1,972
Shares, Issued, Ending Balance at Sep. 30, 2020		10,586,170
September 30, 2020 at Sep. 30, 2020		$ 10	137,361	(117,767)	(13,764)	5,840
March 31, 2020 at Mar. 31, 2020		$ 10	137,338	(119,876)	(13,764)	3,708
Shares, Issued, Beginning Balance at Mar. 31, 2020		10,586,170
Net income				602		602
Stock based compensation			12			12
Shares, Issued, Ending Balance at Jun. 30, 2020		10,586,170
September 30, 2020 at Jun. 30, 2020		$ 10	137,350	(119,274)	(13,764)	4,322
Net income				1,507		1,507
Stock based compensation			11			11
Shares, Issued, Ending Balance at Sep. 30, 2020		10,586,170
September 30, 2020 at Sep. 30, 2020		$ 10	137,361	(117,767)	(13,764)	5,840
March 31, 2020 at Dec. 31, 2020		$ 11	137,462	(117,793)	$ (13,764)	5,916
Shares, Issued, Beginning Balance at Dec. 31, 2020	0	10,750,100			1,015,493
Net income				(666)		(666)
Stock based compensation			34			34
Issuance of shares – option exercises			62			62
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		77,250
Issuance of shares – restricted stock			49			49
Stock Issued During Period, Shares, Restricted Stock Award, Gross		57,500
Shares, Issued, Ending Balance at Mar. 31, 2021	0	10,884,850			1,015,493
September 30, 2020 at Mar. 31, 2021		$ 11	137,607	(118,459)	$ (13,764)	5,395
March 31, 2020 at Dec. 31, 2020		$ 11	137,462	(117,793)	$ (13,764)	5,916
Shares, Issued, Beginning Balance at Dec. 31, 2020	0	10,750,100			1,015,493
Net income						(2,452)
Shares, Issued, Ending Balance at Sep. 30, 2021	806,585	13,732,713			1,015,493
September 30, 2020 at Sep. 30, 2021	$ 1	$ 14	172,898	(120,419)	$ (13,764)	38,730
March 31, 2020 at Mar. 31, 2021		$ 11	137,607	(118,459)	$ (13,764)	5,395
Shares, Issued, Beginning Balance at Mar. 31, 2021	0	10,884,850			1,015,493
Net income				(1,174)		(1,174)
Stock based compensation			1,005			1,005
Issuance of shares – preferred offering		$ 3	15,400			15,403
Stock Issued During Period, Shares, New Issues		2,782,258
Issuance of shares – option exercises			21			21
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		27,650
Issuance of shares – restricted stock			207			207
Stock Issued During Period, Shares, Restricted Stock Award, Gross		20,405
Shares, Issued, Ending Balance at Jun. 30, 2021	0	13,715,163			1,015,493
September 30, 2020 at Jun. 30, 2021		$ 14	154,240	(119,633)	$ (13,764)	20,857
Net income				(610)		(610)
Stock based compensation			334			334
Issuance of shares – warrant exercises			9			9
Issuance of shares – preferred offering	$ 1		18,297			18,298
Issuance of shares warrant exercises (in shares)		1,050
Stock Issued During Period, Shares, New Issues	806,585
Issuance of shares – option exercises			18			18
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		16,500
Shares, Issued, Ending Balance at Sep. 30, 2021	806,585	13,732,713			1,015,493
September 30, 2020 at Sep. 30, 2021	$ 1	$ 14	172,898	(120,419)	$ (13,764)	38,730
Preferred dividends				$ (176)		$ (176)