Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net income (loss)	$ (20,939)	$ (1,928)	$ 15,051
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	9	29	277
Non-cash interest expense:
Related party	4,955	6,236	5,631
Others
Changes in the fair value of derivative instruments:
Related party	8,491	(7,880)	(21,957)
Others	(58)	(230)	(6,739)
Non-cash compensation	205	344	315
Loss (gain) on disposal of fixed assets	10	(10)
Impairment of purchased technology			598
Provision for bad debts		31	31
Changes in assets and liabilities excluding non-cash charges:
Decrease (increase) in accounts receivable	1	(10)	(39)
Decrease in inventories	19	9	2
(Increase) decrease in prepaid expenses and other current assets	(473)	432	(85)
(Increase) in security deposits		(34)
Increase (decrease) in accounts payable, accrued expenses and other	615	29	(2,488)
(Decrease) in other current liabilities	30	(33)
Increase in deferred revenue	10,002	21	58
Decrease in deferred lease and other liabilities	(2)	(4)	(42)
Decrease in restructuring charge			(300)
Total adjustments	23,804	(1,070)	(24,738)
Net cash provided by (used in) operating activities	2,865	(2,998)	(9,687)
Cash flows from investing activities:
Decrease in restricted cash	247		13
Purchase of fixed assets	(46)
Proceeds from sale of fixed assets		13
Net cash provided by investing activities	201	13	13
Cash flows from financing activities:
Proceeds from notes payable		1,400
Payments for debt issue costs	(497)
Proceeds from exercise of stock options and warrants			242
Net proceeds from issuance of common stock and warrants			7,175
Net cash (used in) provided by financing activities	(497)	1,400	7,417
Net increase (decrease) in cash and cash equivalents	2,569	(1,585)	(2,257)
Cash and cash equivalents, beginning of year	1,484	3,069	5,326
Cash and cash equivalents, end of year	4,053	1,484	3,069
Supplemental disclosure of cash flow information:
Interest paid			16
Non-cash investing and financing activities:
Issuance of liability warrants in connection with common stock offering			5,138
Reclassification of liability warrants to equity			349
Debt discounts issued in debt modifications	4,041
Conversion of accrued interest to notes payable	$ 3,031