Quarterly report pursuant to Section 13 or 15(d)

Changes in Fair Value of Financial Instruments (Detail)

v2.4.0.8
Changes in Fair Value of Financial Instruments (Detail) (Investments [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Investments [Member]
 
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Balance $ 0
Purchases 250
Total unrealized (gains) or losses 0
Balance $ 250