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v3.19.3.a.u2

Deferred Revenue (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 USD ($)
Changes in deferred revenue |
Deferred revenue balance - beginning of period | $ 27,883
New billings | 106,153
Revenue recognized | (110,046)
Deferred revenue balance - end of period | $ 23,990

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