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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2018
Jan. 01, 2018
Dec. 31, 2017
Current assets:      
Cash and cash equivalents $ 122,361   $ 225,844
Marketable securities 168,859   103,532
Accounts receivable 26,734   25,326
Unbilled Receivables, Current 161,442   566
Inventories 5,596   5,159
Prepaids and other current assets 16,770   11,317
Total current assets 501,762   371,744
Intangible Assets, Net 82,083   91,722
Goodwill 211,356   209,661
Property, plant and equipment, net 48,392   54,303
Deferred tax assets 81,999   159,099
Contract with Customer, Asset, Net, Noncurrent 609,560   0
Other assets 4,507   4,543
Total assets 1,539,659   891,072
Current liabilities:      
Accounts payable 7,080   9,614
Accrued salaries and benefits 14,982   17,091
Convertible notes, short-term 79,541   78,451
Contract with Customer, Liability, Current 16,798 $ 2,000 18,272
Accrued Income Taxes, Current 16,188   258
Other current liabilities 11,263   9,156
Total current liabilities 145,852   132,842
Convertible notes, long-term 137,037   135,447
Long-term imputed financing obligation 37,045   37,262
Accrued Income Taxes, Noncurrent 92,052   3,344
Other long-term liabilities 8,675   10,593
Total liabilities 420,661   319,488
Commitments and contingencies (Notes 10 and 14)  
Stockholders’ equity:      
Convertible preferred stock, $.001 par value: Authorized: 5,000,000 shares Issued and outstanding: no shares at March 31, 2018 and December 31, 2017 0   0
Common stock, $.001 par value: Authorized: 500,000,000 shares Issued and outstanding: 107,485,217 shares at March 31, 2018 and 109,763,967 shares at December 31, 2017 107   110
Additional paid-in capital 1,196,158   1,212,798
Accumulated deficit (74,255) $ 626,000 (636,227)
Accumulated other comprehensive loss (3,012)   (5,097)
Total stockholders’ equity 1,118,998   571,584
Total liabilities and stockholders’ equity $ 1,539,659   $ 891,072