CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Accounts receivable, allowance for doubtful accounts	$ 171	$ 171
Inventories, reserve	338	513
Property and equipment, accumulated depreciation	577	645
Intangible assets, accumulated amortization	5	4
Convertible debenture, debt discount	$ 230	$ 460
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	22,500,000	22,500,000
Common stock, shares issued	14,275,797	13,886,738
Common stock, shares outstanding	14,275,797	13,886,738
Treasury stock, shares	150	150
Series A Preferred Stock
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, dividend rate	8.00%	8.00%
Preferred stock, shares authorized	7,900,000	7,900,000
Preferred stock, shares issued	435,085	447,652
Preferred stock, shares outstanding	435,085	447,652
Series B Preferred Stock
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	9,000,000	9,000,000
Preferred stock, shares issued	249,985	262,485
Preferred stock, shares outstanding	249,985	262,485