v2.4.0.8

Investments (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Certificates of deposit and money market funds due within one year | $ 5,601 | $ 5,938
Investments in mutual funds | 19,421 | 15,185
Total investment | 25,022 | 21,123
Short-term investments | 6,801 | 7,138
Long-term investments | 18,221 | 13,985
Total investment | 25,022 | 21,123
Held to maturity |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Certificates of deposit and money market funds due within one year | 5,601 | 5,938
Total investment | 5,601 | 5,938
Short-term investments | 5,601 | 5,938
Total investment | 5,601 | 5,938
Available for sale |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Investments in mutual funds | 19,421 | 15,185
Total investment | 19,421 | 15,185
Short-term investments | 1,200 | 1,200
Long-term investments | 18,221 | 13,985
Total investment | $ 19,421 | $ 15,185

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