Unearned Revenue - Remaining Performance Obligation - Additional Information (Detail) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-07-01 |
Jun. 30, 2019 |
|---|---|
| Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] | |
| Revenue allocated to remaining performance obligations, percentage of revenue expected to be recognized | 50.00% |
| Revenue allocated to remaining performance obligations, expected timing of satisfaction | 12 months |