CONSOLIDATED BALANCE SHEETS (in thousands, except share data) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
CURRENT ASSETS:
Trade accounts receivable, net of allowance	$ 133	$ 96
STOCKHOLDERS' EQUITY
Preferred stock, authorized shares (including Series A)	5,000,000	5,000,000
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Common stock, authorized shares	30,000,000	30,000,000
Common stock, issued shares	8,172,491	8,015,746
Common stock, outstanding shares	8,172,491	8,015,746