Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating activities
Net loss	$ (19,616)	$ (17,529)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	411	521
Equity-based compensation expense	2,428	1,983
Noncash interest expense	23
Other	276	23
Changes in operating assets and liabilities:
Accounts receivable	(791)
Inventory	(750)
Prepaid expenses and other current assets	3,905	(156)
Other assets	(388)	(198)
Accounts payable	(367)	(274)
Accrued expenses	(481)	(3,049)
Other liabilities	2	(313)
Total adjustments	4,268	(1,463)
Net cash used in operating activities	(15,348)	(18,992)
Investing activities
Purchases of property and equipment	(1,018)	(214)
Proceeds from sales of property and equipment	46
Net cash used in investing activities	(972)	(214)
Financing activities
Proceeds from issuance of long-term debt, net	9,764
Other	(126)	(87)
Net cash provided by (used in) financing activities	9,638	(87)
Effect of exchange rate changes on cash and cash equivalents	560	(379)
Net decrease in cash and cash equivalents	(6,122)	(19,672)
Cash and cash equivalents at beginning of period	50,436	47,052
Cash and cash equivalents at end of period	44,314	27,380
Supplemental disclosure of cash flow information
Cash paid during the period for interest	5	5
Cash paid for taxes
Series 14 Preferred Stock
Supplemental disclosure of noncash financing and investing activities
Conversion of preferred stock to common stock		$ 6,736