Shared-Based Compensation - Components of Share-Based Compensation Expense by Type of Award (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	$ 1,296	$ 873
Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	181	192
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	892	459
Performance Based Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	$ 223	$ 222