Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Additional Information (Detail)

v3.19.1
Stock-Based Compensation - Additional Information (Detail)
Dec. 31, 2018
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based compensation arrangement by share-based payment award, number of shares available for grant 1,074,273
2017 Omnibus Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based compensation arrangement by share-based payment award, number of shares available for grant 2,696,680