Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net loss	$ (24,981)	$ (1,639)	[1]
Adjustments to reconcile net loss to net cash used in operating activities:
Loss on extinguishment of debt		4,421	[1]
Gain on sale of Agera		(443)	[1]
Expense related to stock-based compensation	928	857	[1]
Stock issued for supplemental stock issuance agreement	6,406
Warrant expense (income)	129	(17,192)	[1]
Derivative revaluation expense		23	[1]
Deferred tax benefit		(2,500)	[1]
Depreciation and amortization	693	604	[1]
Provision for doubtful accounts	(7)
Amortization of debt issue costs		112	[1]
Change in operating assets and liabilities:
Accounts receivable	23	(82)	[1]
Inventory	(97)	(306)	[1]
Prepaid expenses	(133)	574	[1]
Other assets	(214)
Accounts payable	248	(186)	[1]
Accrued expenses and other	973	420	[1]
Deferred revenue	(7)	80	[1]
Net cash used in operating activities	(16,039)	(15,257)	[1]
Cash flows from investing activities:
Purchase of property and equipment	(162)	(473)	[1]
Proceeds from the sale of Agera, net		1,002	[1]
Net cash (used in) provided by investing activities	(162)	529	[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, net		7,864	[1]
Subscription received	2,004
Deferred equity costs	(274)
Payments on insurance loan		(97)	[1]
Principal payments on 12.5% note payable		(3,517)	[1]
Cash dividends paid on redeemable preferred stock		(157)	[1]
Net cash provided by financing activities	1,730	4,047	[1]
Net decrease in cash and cash equivalents	(14,471)	(10,681)	[1]
Cash and cash equivalents, beginning of period	31,346	10,799	[1]
Cash and cash equivalents, end of period	$ 16,875	$ 118	[1]

[1] Restated