Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Stock-based Compensation Expense (Details)

v3.20.2
Stockholders' Equity - Stock-based Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense $ 3,748 $ 3,373 $ 7,148 $ 6,682
Avenue        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense 216 535 431 1,286
Checkpoint [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense 731 813 1,370 1,611
Mustang [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense 957 622 1,762 1,054
Other [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense 47 57 116 100
Employee Awards [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense 1,315 920 2,532 1,855
Executive Awards [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense 366 355 767 707
Non-Employee Awards [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense 51 $ 71 105 $ 69
Warrants [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense $ 65   $ 65