Condensed Consolidated Statement of Stockholder's Equity - Unaudited - 3 months ended Mar. 31, 2018 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income [Member]
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	$ 193			193
Cumulative effect adjustment from adoption of ASU | ASU 2016-01 [Member]				35		$ (35)
Exercise of stock options	22		22
Exercise of stock options (in shares)		5,500
Stock-based compensation	7		7
Balance at Mar. 31, 2018	$ 25,150	$ 47	$ 40,064	$ (14,381)	$ (580)
Balance (in shares) at Mar. 31, 2018	4,698,393	4,698,393