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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Current assets:    
Cash and cash equivalents $ 143,764 $ 154,126
Marketable securities 143,942 145,983
Accounts receivable 16,408 6,001
Prepaids and other current assets 11,476 8,541
Deferred taxes 0 187
Total current assets 315,590 314,838
Intangible assets, net 64,266 89,371
Goodwill 116,899 116,899
Property, plant and equipment, net 56,616 64,023
Deferred taxes, long term 162,485 536
Other assets 3,648 2,612
Total assets 719,504 588,279
Current liabilities:    
Accounts payable 4,096 6,962
Accrued salaries and benefits 12,278 14,840
Convertible notes, short-term 0 0
Deferred Revenue, Current 5,780 4,133
Other current liabilities 6,212 8,723
Total current liabilities 28,366 34,658
Convertible notes, long-term 120,901 115,089
Long-term imputed financing obligation 38,625 39,063
Long-term income taxes payable 2,903 2,769
Other long-term liabilities 2,176 5,078
Total liabilities $ 192,971 $ 196,657
Commitments and contingencies (Notes 11 and 17)
Stockholders’ equity:    
Convertible preferred stock, $.001 par value: Authorized: 5,000,000 shares; Issued and outstanding: no shares at December 31, 2015 and December 31, 2014 $ 0 $ 0
Common Stock, $.001 par value: Authorized: 500,000,000 shares; Issued and outstanding: 109,287,591 shares at December 31, 2015 and 115,161,675 shares at December 31, 2014 109 115
Additional paid in capital 1,130,368 1,153,435
Accumulated deficit (604,317) (761,526)
Accumulated other comprehensive income (loss) 373 (402)
Total stockholders’ equity 526,533 391,622
Total liabilities and stockholders’ equity $ 719,504 $ 588,279