Quarterly report pursuant to Section 13 or 15(d)

Equity Transactions - Narrative (Details)

v3.20.2
Equity Transactions - Narrative (Details)
Apr. 15, 2020
$ / shares
shares
Mar. 30, 2020
Jun. 25, 2018
shares
Jun. 30, 2020
USD ($)
$ / shares
shares
Apr. 14, 2020
shares
Dec. 31, 2019
$ / shares
shares
Jan. 18, 2018
shares
Dec. 21, 2017
shares
Mar. 31, 2016
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Beneficial ownership percentage   20.00%              
Common stock, shares issued 3,717,797     3,876,801 92,944,935 3,837,920      
Common stock, par value (usd per share) | $ / shares $ 0.0001     $ 0.0001   $ 0.0001      
Stock repurchase program, authorized amount | $                 $ 50,000,000.0
Stock repurchase program, remaining authorized amount | $       $ 44,800,000          
Twenty Thirteen Equity Incentive Plan                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of shares authorized (in shares)             440,000    
Number of shares available for grant (in shares)             282,812    
Equity Incentive Plan, 2017                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of shares authorized (in shares)               260,000  
Number of additional shares authorized for issuance (in shares)     80,000            
Employee Stock Option | Equity Incentive Plan, 2017                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of shares available for grant (in shares)               83,914  
Maximum                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Reverse stock split, common stock ratio 0.04