Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Narrative (Details)

v3.20.1
Stock-Based Compensation - Narrative (Details) - shares
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Restricted stock awards and restricted stock units | 2007 Stock Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Equity instruments other than options, granted (in shares) 53,600 98,492  
Performance stock units | 2018 Performance Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Equity instruments other options, outstanding (in shares)     40,599
Award vesting rights, percentage   100.00%