|
Significant Accounting Policies - Scheduled Maturity for the Company's Investments (Detail) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Accounting Policies [Abstract] | ||
| Maturing in one year or less | $ 16,891 | $ 14,708 |
| Maturing after one year through two years | 2,582 | 1,151 |
| Maturing after two years | ||
| Estimated Fair Value | $ 19,473 | $ 15,859 |