Accounts Receivable, Net - Additional Information (Detail) $ in Millions |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2015
USD ($)
Customer
|
Dec. 31, 2014
USD ($)
Customer
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Accounts receivable reserved | $ | $ 0.1 | $ 0.1 |
| Number of top customers | Customer | 10 | 10 |
| Credit concentration risk [Member] | Accounts receivable [Member] | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Accounts receivable, percentage | 39.00% | 37.00% |