XML 62 R48.htm IDEA: XBRL DOCUMENT v3.20.2
Capital Stock and Share-Based Compensation - Additional Information (Details)
$ in Millions
6 Months Ended
Jun. 30, 2020
USD ($)
installment
shares
Jun. 30, 2019
USD ($)
Dec. 31, 2019
shares
Equity [Abstract]      
Expected dividend yield 0.00%    
Aggregate outstanding stock options (in shares) 2,418,245   3,160,397
Outstanding stock options, weighted average remaining contractual term 6 years 4 months 24 days    
Exercisable stock options (in shares) 1,309,606   1,835,799
Exercisable stock options, weighted average remaining contractual term 4 years 8 months 12 days    
Fair value of shares vested | $ $ 7.6    
Fair value of options exercised during period | $ 4.3    
Stock-based compensation expense | $ 1.0 $ 0.7  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense not yet recognized | $ $ 2.4    
Weighted average remaining service period 2 years 6 months    
Restricted stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense not yet recognized | $ $ 1.8    
Weighted average remaining service period 1 year 6 months    
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense not yet recognized | $ $ 1.8    
Weighted average remaining service period 1 year 6 months    
Employees | Restricted stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares vested (in shares) 137,999    
Employees | Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of vesting installments | installment 3    
Shares issued (in shares) 138,650    
Shares vested (in shares) 55,668    
Employees | Restricted Stock Units (RSUs) | Vest in three equal annual installments on the anniversary dates of grant      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of vesting installments | installment 3    
Shares not yet vested (in shares) 76,700    
Employees | Restricted Stock Units (RSUs) | Vest based on levels of 2201 revenue and operating income      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares not yet vested (in shares) 61,950    
Target performance as as percent of revenue and operating income 150.00%    
Payout of shares upon achievement of target performance (in shares) 41,300    
Directors | Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares issued (in shares) 10,652    
Shares vested (in shares) 11,600    
Vesting period, earlier of grant anniversary, or annual stockholders' meeting 1 year    
Employee Director Compensation Plan | Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares not yet vested (in shares) 24,855