Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation - Additional Information (Detail)

v2.4.0.8
Share-Based Compensation - Additional Information (Detail) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]    
Share-based compensation expense $ 605,000 $ 97,000
Related tax benefits on non-qualified stock options $ 5,000 $ 11,000
Number of shares, stock options exercised 15,195 1,679
Restricted stock awards, continuous employment period for vesting of grant Three to five years