Annual report pursuant to Section 13 and 15(d)

Summary of Stock Option Activity (Detail)

v2.4.0.8
Summary of Stock Option Activity (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Number of Options      
Number of Options, Beginning balance 22,022 82,166 140,356
Number of Options, Exercised (7,438) (60,144) (58,190)
Number of Options, Ending balance 14,584 22,022 82,166
Number of Options, Vested at December 31 14,584 22,022 82,166
Weighted Average Exercise Price      
Weighted Average Exercise Price, Beginning balance $ 7.63 $ 7.63 $ 7.63
Weighted Average Exercise Price, Exercised $ 7.63 $ 7.63 $ 7.63
Weighted Average Exercise Price, Ending balance $ 7.63 $ 7.63 $ 7.63
Weighted Average Exercise Price, Vested options $ 7.63 $ 7.63 $ 7.63
Aggregate Intrinsic Value      
Aggregate Intrinsic Value, Ending balance $ 375    
Aggregate Intrinsic Value, Vested options $ 375