XML 103 R70.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Equity Compensation Plans and Share-Based Compensation - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options and Warrants, Additional Disclosures [Abstract]      
Options and warrants outstanding, intrinsic value $ 2,900,000    
Options and warrants exercisable, intrinsic value $ 1,700,000    
Options and warrants outstanding, weighted average remaining contractual term (years) 1 year 6 months    
Options and warrants exercises in period, total intrinsic value $ 600,000 $ 500,000 $ 300,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized [Abstract]      
Shares issued in period 0    
Total compensation cost not yet recognized, nonvested stock options $ 16,000    
Nonvested “restricted” stock      
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized [Abstract]      
Total intrinsic value for nonvested common stock awards vested during period 2,100,000 $ 1,600,000 $ 700,000
Total intrinsic value for nonvested common stock awards outstanding $ 28,800,000    
Weighted-average period of recognition (years) 1 year 4 months 24 days    
Total compensation cost not yet recognized, nonvested common stock awards $ 9,800,000    
Time Based Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted (shares) 19,000 17,000 20,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized [Abstract]      
Vesting period 5 years 5 years 5 years
Stock Options and Warrants | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expiration period 10 years    
Stock options      
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized [Abstract]      
Weighted-average period of recognition (years) 6 months    
Prior to merger      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares available for grant 3,500,000