Accounts Receivable, Net of Allowance for Doubtful Accounts - Additional Information (Detail) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
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| Selling, General and Administrative Expenses | Maximum | ||||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
| Bad debt expense | $ 100,000 | $ 400,000 | $ 100,000 | $ 400,000 |
| X | ||||||||||
- Definition Bad debt expenses. No definition available.
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| 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.
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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