Consolidated Statements of Stockholder's Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance at Dec. 31, 2016	$ 13,891	$ 27	$ 29,173	$ (14,726)	$ (580)	$ (3)
Balance (in shares) at Dec. 31, 2016		2,675,465
Net income	117			117
Other comprehensive income	38					38
Stock-based compensation	88		88
Stock-based compensation (in shares)		10,830
Issuance of shares, net of issuance costs	10,794	$ 20	10,774
Issuance of shares, net of issuance costs (in shares)		2,006,598
Balance at Dec. 31, 2017	$ 24,928	$ 47	40,035	(14,609)	(580)	35
Balance (in shares) at Dec. 31, 2017	4,692,893	4,692,893
Net income	$ 1,405			1,405
Cumulative effect adjustment from adoption of Accounting Standards Update | ASU 2016-01 [Member]				35		$ (35)
Exercise of stock options	$ 27		27
Exercise of stock options (in shares)	9,376	9,376
Repurchase of shares exercised		(1,200)
Stock-based compensation	$ 64		64
Stock-based compensation (in shares)	6,516	6,516
Warrant dividend exercise	$ 927	$ 2	925
Warrant dividend exercise (in shares)		123,593
Issuance costs for rights offering	(28)		(28)
Balance at Dec. 31, 2018	$ 27,323	$ 49	$ 41,023	$ (13,169)	$ (580)
Balance (in shares) at Dec. 31, 2018	4,831,178	4,831,178