Common Stock and Equity - Reserved Common Stock for Stock Options and Restricted Stock Units (Detail)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Class of Stock [Line Items]    
Common stock reserved 5,231 4,908
Common Stock Options and Restricted Stock Units [Member]
   
Class of Stock [Line Items]    
Common stock reserved 5,231 4,908