Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Assets    
Cash and cash equivalents $ 63,309 $ 61,589
Marketable securities, available-for-sale 30,588 9,668
Accounts receivable, net 9,131 2,552
Inventories 6,516 11,598
Other current assets and prepaid expenses 12,112 2,653
Current assets of discontinued operations 0 13,474
Total current assets 121,656 101,534
Property, equipment and leasehold improvements, net 15,348 24,378
Goodwill 10,007 10,007
Intangible assets, net 11,247 2,382
Other assets 2,813 4,093
Noncurrent assets of discontinued operations 0 2,308
Total assets 161,071 144,702
Liabilities and stockholders' deficit    
Accounts payable 6,089 9,086
Accrued expenses 22,155 25,256
Long-term debt and obligations, current portion 4,144 7,643
Other current liabilities 2,581 1,449
Deferred gain on pooled patents agreement 21,000 0
Current liabilities of discontinued operations 0 6,207
Total current liabilities 55,969 49,641
Long-term debt and obligations, less current portion 5,602 9,642
Convertible senior notes 130,000 130,000
Other long-term liabilities 664 976
Long-term liabilities of discontinued operations 0 946
Total liabilities 192,235 191,205
Commitments and contingencies      
Stockholders' deficit:    
Convertible preferred stock, par value $0.001; 5,000 shares authorized, no shares issued or outstanding at December 31, 2014 and 2013 0 0
Common stock, par value $0.001; 185,000 shares authorized, 117,434 and 115,796 shares issued and outstanding at December 31, 2014 and 2013, respectively 117 116
Additional paid-in capital 981,929 967,015
Accumulated other comprehensive income 87 148
Accumulated deficit (1,013,297) (1,014,309)
Cumulative translation adjustment of discontinued operations 0 527
Total stockholders' deficit (31,164) (46,503)
Total liabilities and stockholders' deficit $ 161,071 $ 144,702