Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Net operating loss carry forwards (NOL)	$ 63,714	$ 63,711
Capital loss	3,515	3,515
Write-off of long-lived assets	526	526
Amortization of intangibles	(670)	(608)
Stock-based compensation	2,596	2,582
Capitalized software development costs and fixed assets	136	136
Deferred revenue	1,568	840
Alternative minimum tax credit carry forward	43	43
Inventory reserve	0	27
Accruals	2,554	2,554
Impairment loss	2,752	2,752
Derivative gain/loss	9,375	6,832
Interest expense	3,380	3,076
Total deferred tax assets	90,546	85,986
Valuation allowance	(90,546)	(85,986)
Net deferred tax asset	$ 0	$ 0