XML 28 R52.htm IDEA: XBRL DOCUMENT v2.4.0.8
Stock-Based Compensation - Stock-Based Employee Compensation Expense (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Labor And Related Expense [Abstract]        
Stock-based compensation expense $ 429 $ 321 $ 776 $ 695
Tax benefit (166) (124) (300) (269)
Stock-based compensation expense, net of tax $ 263 $ 197 $ 476 $ 426