Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation Plan (Narrative) (Details)

v3.20.1
Stock-Based Compensation Plan (Narrative) (Details)
shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2020
USD ($)
item
shares
Mar. 31, 2019
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares authorized under the plan | shares 500  
Stock options granted fair value | $ $ 543  
Allocated Share-based Compensation Expense | $ 613 $ 785
Unrecognized compensation cost related to unvested stock options | $ $ 4,228  
Unvested restricted stock awards | shares 600  
Unvested stock options | shares 1,325  
Unrecognized compensation cost related to unvested restricted stock awards | $ $ 2,724  
2015 Plan [Member] | Stock Options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of stock options issued under a plan | shares 125  
Vesting period 4 years  
Vest In Four Equal Consecutive Quarterly Tranches From The Date Of Grant [Member] | 2015 Plan [Member] | Stock Options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of Vesting Tranches | item 4