Quarterly report pursuant to sections 13 or 15(d)

Soft Dollar Arrangements - Additional Information (Detail)

v2.4.0.8
Soft Dollar Arrangements - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Soft Dollar Arrangements [Abstract]    
Soft dollar credits $ 264 $ 248