Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation Plans - 2013 Omnibus Equity Incentive Plan - Award Limitations - Additional Information (Detail)

v3.19.1
Stock-Based Compensation Plans - 2013 Omnibus Equity Incentive Plan - Award Limitations - Additional Information (Detail)
Mar. 31, 2019
Incentive_Plan
shares
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]  
Common stock shares available for grant | shares 5,353,815
Number of active equity plans | Incentive_Plan 1
Equity incentive plan amendment, shareholder approval date 2017-05
Equity incentive plan amendment, board of directors approval date 2017-02