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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 109,063 | $ 138,976
Available-for-sale securities | 478,791 | 497,972
Accounts receivable, net | 39,778 | 33,867
Contract assets | 1,779 | 2,063
Prepaid expenses and other current assets | 18,193 | 16,994
Total current assets | 647,604 | 689,872
Property and equipment, net | 100,174 | 101,466
Goodwill | 16,399 | 4,083
Acquired intangible assets, net | 4,900 | 31
Operating lease right-of-use assets | 48,234 | 0
Deferred contract acquisition costs, noncurrent | 28,171 | 25,184
Restricted cash | 8,847 | 6,660
Other noncurrent assets | 4,202 | 3,528
Total assets | 858,531 | 830,824
Current liabilities: |  |
Accounts payable | 14,301 | 11,463
Accrued expenses and other current liabilities | 27,872 | 28,314
Operating lease liabilities | 17,009 | 0
Liability for early exercise of unvested stock options | 12,006 | 13,263
Deferred revenue | 37,096 | 30,843
Total current liabilities | 108,284 | 83,883
Build-to-suit lease financing obligation | 0 | 10,506
Operating lease liabilities, noncurrent | 33,795 | 0
Deferred revenue, noncurrent | 996 | 804
Other noncurrent liabilities | 9,104 | 9,803
Total liabilities | 152,179 | 104,996
Commitments and contingencies (Note 7) |  |
Stockholders’ Equity: |  |
Additional paid-in capital | 1,038,544 | 1,027,179
Accumulated deficit | (333,896) | (301,706)
Accumulated other comprehensive income | 1,407 | 61
Total stockholders’ equity | 706,352 | 725,828
Total liabilities and stockholders’ equity | 858,531 | 830,824
Class A common stock |  |
Stockholders’ Equity: |  |
Common stock | $ 154 | $ 87
Common stock, shares authorized (in shares) | 2,250,000,000 | 2,250,000,000
Class B common stock |  |
Stockholders’ Equity: |  |
Common stock | $ 143 | $ 207
Common stock, shares authorized (in shares) | 315,000,000 | 315,000,000

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