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Commitments and Contingencies (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Dec. 31, 2018
Contractual obligations |  |  |
Contractual Obligation, Future Minimum Payments Due, Remainder of Fiscal Year | [1],[2] | $ 5,998 |
Contractual Obligation, Future Minimum Payments Due, Due in Next Fiscal Year | [1],[2] | 5,601 |
Contractual Obligation, Future Minimum Payments Due, Due in Second Fiscal Year | [1],[2] | 4,103 |
Contractual Obligation, Future Minimum Payments Due, Due in Third Fiscal Year | [1],[2] | 2,372 |
Contractual Obligation, Future Minimum Payments Due, Due in Fourth Fiscal Year | [1],[2] | 173,692 |
Contractual Obligation | [1],[2] | $ 191,766 |
Terms of noncancellable license agreement, minimum (in years) |  | 1 year |
Other Commitments [Domain] |  |  |
Contractual obligations |  |  |
Contractual Obligation, Future Minimum Payments Due, Remainder of Fiscal Year | [1],[2] | $ 815 |
Contractual Obligation, Future Minimum Payments Due, Due in Next Fiscal Year | [1],[2] | 234 |
Contractual Obligation, Future Minimum Payments Due, Due in Second Fiscal Year | [1],[2] | 234 |
Contractual Obligation, Future Minimum Payments Due, Due in Third Fiscal Year | [1],[2] | 0 |
Contractual Obligation, Future Minimum Payments Due, Due in Fourth Fiscal Year | [1],[2] | 0 |
Contractual Obligation | [1],[2] | 1,283 |
Imputed financing obligation |  |  |
Contractual obligations |  |  |
Contractual Obligation, Future Minimum Payments Due, Due in Next Fiscal Year | [3] |  | $ 5,677
Contractual Obligation, Future Minimum Payments Due, Due in Second Fiscal Year | [3] |  | 2,404
Contractual Obligation, Future Minimum Payments Due, Due in Third Fiscal Year | [3] |  | 0
Contractual Obligation, Future Minimum Payments Due, Due in Fourth Fiscal Year | [3] |  | 0
Contractual Obligation, Future Minimum Payments Due, Due in Fifth Fiscal Year | [3] |  | 0
Contractual Obligation | [3] |  | 8,081
Leases and other contractual obligations |  |  |
Contractual obligations |  |  |
Contractual Obligation, Future Minimum Payments Due, Due in Next Fiscal Year |  |  | 5,333
Contractual Obligation, Future Minimum Payments Due, Due in Second Fiscal Year |  |  | 4,883
Contractual Obligation, Future Minimum Payments Due, Due in Third Fiscal Year |  |  | 4,960
Contractual Obligation, Future Minimum Payments Due, Due in Fourth Fiscal Year |  |  | 3,271
Contractual Obligation, Future Minimum Payments Due, Due in Fifth Fiscal Year |  |  | 968
Contractual Obligation |  |  | 19,415
Software licenses |  |  |
Contractual obligations |  |  |
Contractual Obligation, Future Minimum Payments Due, Remainder of Fiscal Year | [1],[2],[4] | 3,997 |
Contractual Obligation, Future Minimum Payments Due, Due in Next Fiscal Year | [1],[2],[4] | 2,995 |
Contractual Obligation, Future Minimum Payments Due, Due in Second Fiscal Year | [1],[2],[4] | 1,497 |
Contractual Obligation, Future Minimum Payments Due, Due in Third Fiscal Year | [1],[2],[4] | 0 |
Contractual Obligation, Future Minimum Payments Due, Due in Fourth Fiscal Year | [1],[2],[4] | 0 |
Contractual Obligation | [1],[2],[4] | 8,489 |
Convertible notes |  |  |
Contractual obligations |  |  |
Contractual Obligation, Future Minimum Payments Due, Remainder of Fiscal Year | [1],[2] | 0 |
Contractual Obligation, Future Minimum Payments Due, Due in Next Fiscal Year | [1],[2] | 0 |
Contractual Obligation, Future Minimum Payments Due, Due in Second Fiscal Year | [1],[2] | 0 |
Contractual Obligation, Future Minimum Payments Due, Due in Third Fiscal Year | [1],[2] | 0 |
Contractual Obligation, Future Minimum Payments Due, Due in Fourth Fiscal Year | [1],[2] | 172,500 |
Contractual Obligation | [1],[2] | 172,500 |
Interest payments related to convertible notes |  |  |
Contractual obligations |  |  |
Contractual Obligation, Future Minimum Payments Due, Remainder of Fiscal Year | [1],[2] | 1,186 |
Contractual Obligation, Future Minimum Payments Due, Due in Next Fiscal Year | [1],[2] | 2,372 |
Contractual Obligation, Future Minimum Payments Due, Due in Second Fiscal Year | [1],[2] | 2,372 |
Contractual Obligation, Future Minimum Payments Due, Due in Third Fiscal Year | [1],[2] | 2,372 |
Contractual Obligation, Future Minimum Payments Due, Due in Fourth Fiscal Year | [1],[2] | 1,192 |
Contractual Obligation | [1],[2] | $ 9,494 |
Leasing Arrangement [Member] |  |  |
Contractual obligations |  |  |
Contractual Obligation, Future Minimum Payments Due, Due in Next Fiscal Year |  |  | 11,010
Contractual Obligation, Future Minimum Payments Due, Due in Second Fiscal Year |  |  | 7,287
Contractual Obligation, Future Minimum Payments Due, Due in Third Fiscal Year |  |  | 4,960
Contractual Obligation, Future Minimum Payments Due, Due in Fourth Fiscal Year |  |  | 3,271
Contractual Obligation, Future Minimum Payments Due, Due in Fifth Fiscal Year |  |  | 968
Contractual Obligation |  |  | $ 27,496
[1] | For the Company's lease commitments, refer to Note 9, "Leases".
[2] | The above table does not reflect possible payments in connection with uncertain tax benefits of approximately $24.5 million including $22.2 million recorded as a reduction of long-term deferred tax assets and $2.3 million in long-term income taxes payable as of March 31, 2019. As noted below in Note 14, “Income Taxes,” although it is possible that some of the unrecognized tax benefits could be settled within the next 12 months, the Company cannot reasonably estimate the outcome at this time.
[3] | With respect to the imputed financing obligation, the main components of the difference between the amount reflected in the table above and the amount reflected on the unaudited condensed consolidated balance sheet are the interest on the imputed financing obligation and the estimated common area expenses over the future periods. The amount includes the amended Ohio lease and the amended Sunnyvale lease.
[4] | The Company has commitments with various software vendors for agreements generally having terms longer than one year.

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- Definition Amount of contractual obligation due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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