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Revenue - Additional Information (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2018 USD ($)
Revenue [Line Items] |
Software licensing arrangements warranty, description | The Company's software license arrangements typically provide the customer with a standard 90-day assurance-type warranty.
Software licensing arrangements warranty period | 90 days
Initial post contract customer support period | 1 year
Percentage of receivables as of December 31, 2018 or December 31, 2017 | No customer accounted for more than 10% of the Company’s consolidated receivables balance as of December 31, 2018 and 2017.
Revenue allocated to remaining performance obligations | $ 666.4
Percentage of revenue allocated to remaining performance obligations to be recognized over the next 12 months | 48.00%
Capitalized sales commissions minimum amortization period | 1 year
Performance obligation satisfied in previous period | $ 29.6
Selling and Marketing [Member] |
Revenue [Line Items] |
Amortization of capitalized sales commissions | 8.4
Cost of Revenue [Member] |
Revenue [Line Items] |
Amortization of capitalized contract costs | 4.7
Other Current Assets [Member] |
Revenue [Line Items] |
Capitalized sales commissions | 1.3
Capitalized contract costs, current | 0.2
Other Noncurrent Assets [Member] |
Revenue [Line Items] |
Capitalized sales commissions | 11.7
Capitalized contract costs, noncurrent | $ 12.6

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