XML 50 R39.htm IDEA: XBRL DOCUMENT v3.8.0.1
Stock-Based Compensation (Detail) - (Table 2) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Total $ 4,907 $ 4,982 $ 15,680 $ 14,618
Restricted Stock [Member]        
Allocated Share-based Compensation Expense 3,902 4,177 12,540 12,417
Stock Options [Member]        
Allocated Share-based Compensation Expense $ 1,005 $ 805 $ 3,140 $ 2,201