Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents	$ 133	$ 224
Accounts receivable	1,244	962
Inventories		15
Prepaid expenses	181	89
Total current assets	1,558	1,290
Property and equipment, net	169	124
Other assets	38	38
TOTAL ASSETS	1,765	1,452
LIABILITIES AND STOCKHOLDERS’ DEFICIT
Accounts payable and accrued expenses	1,269	1,182
Dividends payable	483	447
Obligations under capital lease, current portion	46	44
Deferred revenue	76	406
Total current liabilities	1,874	2,079
Loan payable to officer	2,965	2,865
Obligations under capital lease, noncurrent portion	38	17
Commitments and contingencies
Stockholders’ deficit:
Common stock	130	128
Common stock held in treasury, at cost – 10 shares	(362)	(362)
Additional paid-in capital	56,567	56,518
Accumulated deficit	(61,183)	(61,529)
Accumulated other comprehensive loss	(107)	(107)
Total stockholders’ deficit	(3,112)	(3,509)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	1,765	1,452
Series 1 Preferred Stock [Member]
Stockholders’ deficit:
Preferred stock	707	707
Series 2 Preferred Stock [Member]
Stockholders’ deficit:
Preferred stock	724	724
Series 3 Preferred Stock [Member]
Stockholders’ deficit:
Preferred stock	$ 412	$ 412