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Revenue - Additional Information (Detail) $ in Millions | 3 Months Ended
--- | ---
Mar. 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 March 31, 2018 or December 31, 2017 | No customer accounted for more than 10% of the Company's consolidated receivables balance as of March 31, 2018 or December 31, 2017.
Revenue allocated to remaining performance obligations | $ 589.5
Percentage of revenue allocated to remaining performance obligations to be recognized over the next 12 months | 50.00%
Capitalized sales commissions minimum amortization period | 1 year
Selling and Marketing [Member] |
Revenue [Line Items] |
Amortization of capitalized sales commissions | $ 2.3
Cost of Revenue [Member] |
Revenue [Line Items] |
Amortization of capitalized contract costs | 1.2
Other Noncurrent Assets [Member] |
Revenue [Line Items] |
Capitalized sales commissions | 19.1
Capitalized contract costs, noncurrent | 12.0
Other Current Assets [Member] |
Revenue [Line Items] |
Capitalized sales commissions | 0.4
Capitalized contract costs, current | $ 0.2

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