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Equity Incentive Plan - Narrative (Details)
12 Months Ended
Jan. 29, 2021
USD ($)
shares
Feb. 17, 2020
USD ($)
shares
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
shares
May 22, 2019
shares
Feb. 22, 2019
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock options granted (in shares)     0 0 0    
Allocated stock-based compensation expense | $     $ 994,000 $ 1,400,000 $ 3,200,000    
Granted (shares)     176,930 103,581      
Two Thousand Nineteen Equity Incentive Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares authorized under equity incentive plan (in shares)     4,737,701       6,000,000
Number of shares authorized, issued in form of restricted stock reduction multiplier           4.5  
2014 Equity Incentive Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares authorized under equity incentive plan (in shares)     4,978,249        
Restricted Stock And Restricted Stock Units (RSUs) | Two Thousand Nineteen Equity Incentive Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares authorized under equity incentive plan (in shares)     1,052,822     1,333,333  
Restricted Stock              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Expected future stock-based compensation expense | $     $ 1,700,000        
Average period of expected future stock option expense     3 years 5 months 1 day        
Restricted Stock | 2014 Equity Incentive Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares authorized under equity incentive plan (in shares)     1,422,357        
Stock Options | 2014 Equity Incentive Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares authorized under equity incentive plan (in shares)     3,555,892        
Restricted Stock Units (RSUs) | Two Thousand Nineteen Equity Incentive Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted (shares) 147,315 83,744          
Grant date value | $ $ 1,800,000 $ 1,300,000          
Restricted Stock Units (RSUs) | Two Thousand Nineteen Equity Incentive Plan | Share-based Payment Arrangement, Tranche One              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted (shares) 32,769 28,460          
Vesting period (years) 1 year 1 year          
Restricted Stock Units (RSUs) | Two Thousand Nineteen Equity Incentive Plan | Share-based Payment Arrangement, Tranche Two              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted (shares) 114,546 55,284          
Vesting period (years) 5 years 5 years          
Beginning of vesting period (years) 1 year            
Period after grant date to begin vesting period   1 year          
Performance Shares | Minimum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Percentage of shares issuable based on threshold performance 0.00% 0.00%          
Performance Shares | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Percentage of shares issuable based on threshold performance 225.00% 225.00%          
Performance Shares | Two Thousand Nineteen Equity Incentive Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted (shares) 29,615 19,837          
Grant date value | $ $ 366,041 $ 313,623          
Vesting period (years) 3 years 3 years