|
Revenues by Revenue Sources (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Revenue [Line Items] | |||
| Total Revenue | $ 182,644 | $ 152,550 | $ 132,794 |
| Partner and Other Revenue Sources | |||
| Revenue [Line Items] | |||
| Total Revenue | 171,314 | 141,617 | 121,904 |
| Proprietary Web site Traffic Sources and Domain Names | |||
| Revenue [Line Items] | |||
| Total Revenue | $ 11,330 | $ 10,933 | $ 10,890 |