Cash Equivalents and Marketable Securities - Additional Information (Details) |
9 Months Ended |
|---|---|
Sep. 30, 2018 | |
| Maximum | |
| Cash And Cash Equivalents [Line Items] | |
| Marketable securities maturity period | 1 year |
| X | ||||||||||
- Definition Marketable securities maturity period. No definition available.
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Details
|