Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation and Other Benefit Plans (Narrative) (Details)

v3.20.1
Stock-Based Compensation and Other Benefit Plans (Narrative) (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Jun. 06, 2019
$ / shares
shares
May 10, 2019
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shares
Apr. 01, 2019
$ / shares
shares
Feb. 28, 2019
$ / shares
shares
Feb. 28, 2018
$ / shares
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
Dec. 31, 2018
USD ($)
$ / shares
shares
Dec. 31, 2017
USD ($)
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Stock options, authorized | shares           68,241    
Stock-based compensation | $           $ 3,506 $ 2,388 $ 1,098
Payments to settle stock appreciation rights | $           491 82  
Cash proceeds from stock options exercised | $           $ 300 $ 500 $ 39
Options granted | shares           923,000    
Options granted, weighted average exercise price           $ 2.08 $ 1.05 $ 0.99
Stock option granted, reduction ratio for numbers authorized           1    
Other benefit plans, cost | $           $ 400 $ 300 $ 200
Weighted average grant date fair value - ($/share)           $ 1.06 $ 0.68 $ 0.49
Employees [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Awards, vesting period       3 years     3 years 3 years
Options granted | shares 257,228   44,163 622,140     494,941 1,162,930
Options granted, weighted average exercise price $ 1.43   $ 2.29 $ 2.33     $ 0.86  
Non-Employee Directors [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Options granted | shares             175,644 465,950
Options granted, weighted average exercise price             $ 1.60  
Stock Option [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Awards, vesting period           5 years    
Total intrinsic value of options exercised | $           $ 300 $ 600 $ 0
Unrecognized compensation costs | $           $ 300    
Compensation costs expected to be recognized           1 year 6 months    
Restricted Stock [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Awards, vesting period           3 years    
Other awards granted | shares 111,888   22,926 174,464 323,474 309,000    
Other awards granted, weighted average exercise price $ 1.43   $ 2.29 $ 2.33 $ 0.86 $ 2.00    
Unrecognized compensation costs | $           $ 200    
Compensation costs expected to be recognized           1 year 6 months    
Vest-date fair value | $           $ 600 $ 400 $ 300
Weighted average grant date fair value - ($/share)           $ 2.00 $ 1.71 $ 0.98
Stock Appreciation Rights (SARs) [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Stock-based compensation | $           $ 2,500    
Award granted life   5 years   5 years     5 years  
Awards, vesting period   3 years   3 years     3 years 3 years
Other awards granted | shares   196,892   951,699 2,373,411 1,148,000 1,049,528  
Other awards granted, weighted average exercise price   $ 1.72   $ 2.33 $ 0.86   $ 1.20  
Share-Based Compensation Arrangement By Share-Based Payment Award Life           5 years    
Stock Appreciation Rights (SARs) [Member] | First Vesting Milestone [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Share-based compensation, vesting hurdle share price             1.30  
Stock Appreciation Rights (SARs) [Member] | Second Vesting Milestone [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Share-based compensation, vesting hurdle share price             1.50  
Stock Appreciation Rights (SARs) [Member] | Third Vesting Milestone [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Share-based compensation, vesting hurdle share price             $ 1.75