Consolidated Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net loss	$ (12,044)	$ (13,076)	[1]
Adjustments to reconcile net loss to net cash used in operating activities:
Loss on extinguishment of debt		4,421	[1]
Expense related to stock-based compensation	209	582	[1]
Warrant expense (income)	317	(2,647)	[1]
Derivative revaluation expense		1,917	[1]
Deferred tax benefit		(2,500)	[1]
Depreciation and amortization	456	392	[1]
Provision for doubtful accounts		(16)	[1]
Provision for excessive and/or obsolete inventory		7	[1]
Amortization of debt issue costs		103	[1]
Change in operating assets and liabilities, excluding effects of acquisition and disposition:
Increase in accounts receivable	(10)	(33)	[1]
Decrease in other receivables		5	[1]
Increase in inventory	(144)	(319)	[1]
Decrease in prepaid expenses and other current assets	537	427	[1]
Increase (decrease) accounts payable	221	(1,214)	[1]
Increase in accrued expenses and other	30	554	[1]
Increase in deferred revenue	11	75	[1]
Net cash used in operating activities	(10,417)	(11,322)	[1]
Cash flows from investing activities:
Purchase of property and equipment	(122)	(359)	[1]
Net cash used in investing activities	(122)	(359)	[1]
Cash flows from financing activities:
Offering costs associated with the issuance of convertible debt		(46)	[1]
Proceeds from the issuance of redeemable preferred stock series E, net		7,185	[1]
Subscription received	4
Payments on insurance loan		(72)	[1]
Principal payments on 12.5% note payable		(3,518)	[1]
Cash dividends paid on preferred stock		(109)	[1]
Net cash provided in financing activities	4	3,440	[1]
Effect of exchange rate changes on cash balances	(1)
Net decrease in cash and cash equivalents	(10,536)	(8,241)	[1]
Cash and cash equivalents, beginning of period	31,346	10,799	[1]
Cash and cash equivalents, end of period	$ 20,810	$ 2,558	[1]

[1] Restated