Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 19,356	$ 17,471
Marketable investment securities	71,083	83,244
Accounts receivable	25,403	30,276
Inventory	36,728	0
Prepaid expenses	2,975	4,317
Other current assets	824	1,743
Total current assets	156,369	137,051
Property and equipment, net	4,079	4,193
Goodwill	9,429	9,429
Intangibles, net	18,178	0
Debt issuance costs, net	410	436
Total assets	188,465	151,109
Current Liabilities
Accounts payable and accrued expenses	16,606	23,289
Current portion of non-recourse debt	6,389	6,278
Total current liabilities	22,995	29,567
Convertible notes payable	16,545	16,545
Non-recourse debt, less current portion	146,635	153,024
Other liabilities	6,535	6,614
Total liabilities	192,710	205,750
Commitments and contingencies (notes 6 and 8)
Stockholders' deficit
Preferred stock, $0.001 par value. Authorized 5,000,000 shares; issued and outstanding no shares	0	0
Common stock, $0.001 par value. Authorized 175,000,000 shares; issued and outstanding 93,199,571 shares and 86,799,049 shares, respectively	93	87
Additional paid-in capital	1,012,627	954,452
Accumulated other comprehensive income	16	5
Accumulated deficit	(1,016,981)	(1,009,185)
Total stockholders' deficit	(4,245)	(54,641)
Total liabilities and stockholders' deficit	$ 188,465	$ 151,109