Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.3
Share-Based Compensation - Unrecognized Share-Based Compensation Expense (Detail) - Restricted stock awards
$ in Thousands
6 Months Ended
Jun. 30, 2019
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized Expense $ 5,809
Average Expected Recognition Period 2 years 2 months 12 days