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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Jun. 30, 2018 | Jan. 01, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Current assets: |  |  |
Cash and cash equivalents | $ 248,284 |  | $ 225,844
Marketable securities | 50,056 |  | 103,532
Accounts receivable | 39,263 |  | 25,326
Unbilled Receivables, Current | 179,606 |  | 566
Inventories | 6,041 |  | 5,159
Prepaids and other current assets | 14,456 |  | 11,317
Total current assets | 537,706 |  | 371,744
Intangible Assets, Net | 70,940 |  | 91,722
Goodwill | 208,680 |  | 209,661
Property, plant and equipment, net | 50,235 |  | 54,303
Deferred tax assets | 82,111 |  | 159,099
Contract with Customer, Asset, Net, Noncurrent | 571,269 |  | 0
Other assets | 4,832 |  | 4,543
Total assets | 1,525,773 |  | 891,072
Current liabilities: |  |  |
Accounts payable | 8,386 |  | 9,614
Accrued salaries and benefits | 17,385 |  | 17,091
Convertible notes, short-term | 80,648 |  | 78,451
Contract with Customer, Liability, Current | 13,583 | $ 2,000 | 18,272
Accrued Income Taxes, Current | 18,794 |  | 258
Other current liabilities | 13,402 |  | 9,156
Total current liabilities | 152,198 |  | 132,842
Convertible notes, long-term | 138,647 |  | 135,447
Long-term imputed financing obligation | 36,816 |  | 37,262
Accrued Income Taxes, Noncurrent | 84,804 |  | 3,344
Other long-term liabilities | 7,823 |  | 10,593
Total liabilities | 420,288 |  | 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 June 30, 2018 and December 31, 2017 | 0 |  | 0
Common stock, $.001 par value: Authorized: 500,000,000 shares Issued and outstanding: 107,345,041 shares at June 30, 2018 and 109,763,967 shares at December 31, 2017 | 107 |  | 110
Additional paid-in capital | 1,210,321 |  | 1,212,798
Accumulated deficit | (97,383) | $ 626,000 | (636,227)
Accumulated other comprehensive loss | (7,560) |  | (5,097)
Total stockholders’ equity | 1,105,485 |  | 571,584
Total liabilities and stockholders’ equity | $ 1,525,773 |  | $ 891,072

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- Definition The unamortized amount of long-term liabilities that an Entity assumes in consideration for the estimated fair value of the Entity's share of buildings in the build out of leased facilities plus any tenant improvement allowance received from landlords. As the Entity retains sufficient continuing involvement following the completion of construction, for accounting purposes, the Entity is treated as the owner of the leased facilities and to record an imputed financing obligation for its obligation to the legal owners. + References No definition available. + Details
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