Annual report pursuant to Section 13 and 15(d)

Share-Based Compensations - Unrecognized Share-Based Compensation Expense (Detail)

v2.4.0.8
Share-Based Compensations - Unrecognized Share-Based Compensation Expense (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized Expense $ 3,204
Average Expected Recognition Period 2 years 6 months
Stock Option Awards [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized Expense 1,538
Average Expected Recognition Period 2 years 4 months 24 days
Restricted stock awards [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized Expense $ 1,666
Average Expected Recognition Period 2 years 8 months 12 days