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Balance Sheet Details - Schedule of Other Non-Current Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Other Liabilities Noncurrent [Abstract] |  |
Unrecognized tax benefits (including interest) | $ 6,384 | $ 5,409
Non-current operating lease obligations | 19,970 |
Contingent consideration - acquisitions |  | 638
Deferred revenue | 2,464 | 1,314
Other | 2,953 | 3,800
Total non-current liabilities | $ 31,771 | $ 11,161

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