Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net loss	$ (34,198)	$ (13,530)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	101	98
Accretion of discount on convertible notes	1,653	1,435
Amortization of deferred financing costs	175	128
Stock compensation expense	1,218	1,668
Deferred income taxes		(2,310)
Other	(8)	2
Changes in:
Accounts receivable, net	(434)	(468)
Inventories, net	(389)	(2,232)
Prepaid expenses and other current assets	(1,047)	(8)
Accounts payable	(2,203)	567
Deferred revenues	46	(134)
Accrued interest on convertible notes	(2,731)	1,676
Other current liabilities	(940)	310
Other liabilities	(2)	(6,889)
Net cash used in operating activities	(38,759)	(19,687)
Cash flows from investing activities:
Purchases of held-to-maturity securities	(11,035)	(17,266)
Proceeds from maturities of held-to-maturity securities	18,321	7,787
Capital expenditures	(23)	(29)
Changes in restricted cash	(200)
Net cash provided by (used in) investing activities	7,063	(9,508)
Cash flows from financing activities:
Proceeds from issuance of common stock	213	165
Proceeds from issuance of Convertible Notes, net of expenses		222,697
Net cash provided by financing activities	213	222,862
Effect of exchange rate changes	(46)
Net (decrease) increase in cash and cash equivalents	(31,529)	193,667
Cash and cash equivalents at beginning of period	114,094	44,791
Cash and cash equivalents at end of period	82,565	238,458
Other information:
Income tax paid
Interest paid	$ 5,464	$ 6