Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Preferred Stock [Member] Series A Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2017	4,250	14,021,422
Balance at Dec. 31, 2017		$ 14	$ 84,036	$ (73,958)	$ 10,092
Stock based compensation			748		748
Stock option/warrant exercises (in shares)		2,003,605
Stock option/warrant exercises		$ 2	8,897		8,899
Stock issued – on vested RSUs (in shares)		76,539
Stock issued – on vested RSUs
Net income				1,143	1,143
Series A preferred stock redemption (in shares)	(1,063)
Series A preferred stock redemption			(1,063)		(1,063)
Stock issued for services (in shares)		5,939
Stock issued for services			36		36
Preferred stock dividends				(200)	(200)
Balance (in shares) at Jun. 30, 2018	3,187	16,107,505
Balance at Jun. 30, 2018		$ 16	92,654	(73,015)	19,655
Balance (in shares) at Mar. 31, 2018	4,250	14,145,413
Balance at Mar. 31, 2018		$ 14	84,518	(74,061)	10,471
Stock based compensation			374		374
Stock option/warrant exercises (in shares)		1,941,167
Stock option/warrant exercises		$ 2	8,825		8,827
Stock issued – on vested RSUs (in shares)		20,925
Stock issued – on vested RSUs
Net income				1,139	1,139
Series A preferred stock redemption (in shares)	(1,063)
Series A preferred stock redemption			(1,063)		(1,063)
Preferred stock dividends				(93)	(93)
Balance (in shares) at Jun. 30, 2018	3,187	16,107,505
Balance at Jun. 30, 2018		$ 16	92,654	(73,015)	19,655
Balance (in shares) at Dec. 31, 2018		18,547,406
Balance at Dec. 31, 2018		$ 19	114,160	(71,031)	43,148
Stock based compensation			1,252		1,252
Stock option/warrant exercises (in shares)		265,061
Stock option/warrant exercises			601		601
Stock issued – on vested RSUs (in shares)		86,142
Stock issued – on vested RSUs
Net income				1,265	1,265
Balance (in shares) at Jun. 30, 2019		18,898,609
Balance at Jun. 30, 2019		$ 19	116,013	(69,766)	46,266
Balance (in shares) at Mar. 31, 2019		18,717,095
Balance at Mar. 31, 2019		$ 19	114,951	(70,604)	44,366
Stock based compensation			646		646
Stock option/warrant exercises (in shares)		160,364
Stock option/warrant exercises			416		416
Stock issued – on vested RSUs (in shares)		21,150
Stock issued – on vested RSUs
Net income				838	838
Balance (in shares) at Jun. 30, 2019		18,898,609
Balance at Jun. 30, 2019		$ 19	$ 116,013	$ (69,766)	$ 46,266