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Share Based Compensation - Narrative (Details)
12 Months Ended
Dec. 31, 2019
USD ($)
plan
$ / shares
shares
Dec. 31, 2018
USD ($)
$ / shares
shares
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Number of active equity incentive plans | plan 2  
Aggregate number of shares of common stock authorized to issue under the Plans (in shares) 185,000  
Shares available for future issuance under the Plans (in shares) 140,127  
Number of shares reserved for issuance under the Plans (in shares) 40,621  
Stock options granted (in shares) 0 0
Unrecognized compensation cost | $ $ 2,000  
Purchase price of granted restricted stock (usd per share) | $ / shares $ 0  
Weighted average grant-date fair value of the restricted stock units (usd per share) | $ / shares $ 6.87  
Stock Options    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Stock options contractual term under the Plans 1 year 8 months 5 days  
Stock options granted (in shares) 0  
Cash received from stock option exercises | $ $ 0 $ 26,000
Total intrinsic value of stock options exercised | $ $ 0 $ 36,000
Stock Options | Minimum    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Stock options requisite service period under the Plans 1 year  
Stock options contractual term under the Plans 7 years  
Stock Options | Maximum    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Stock options requisite service period under the Plans 4 years  
Stock options contractual term under the Plans 10 years  
Restricted Stock    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Weighted average period of years 10 months 24 days  
Weighted average grant-date fair value of the restricted stock units (usd per share) | $ / shares $ 1.44 $ 19.17
Unrecognized compensation costs | $ $ 600,000  
Restricted Stock | Minimum    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
restricted stock vesting period under the Plans 1 year  
Restricted Stock | Maximum    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
restricted stock vesting period under the Plans 4 years