Quarterly report pursuant to Section 13 or 15(d)

Description of Stock Plans - Narrative (Details)

v3.19.2
Description of Stock Plans - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
May 31, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Mar. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Allocated stock compensation expense     $ 682 $ 548  
Weighted average grant-date fair value (in dollars per share)   $ 1.68 $ 3.86 $ 1.68  
Total unrecognized stock base compensation expense   $ 2,747 $ 3,472 $ 2,747  
Unvested stock options, weighted average period     2 years 4 months 15 days 2 years 3 months 23 days  
Maximum          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Option plan, term     10 years    
Equity Option          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Granted (in shares)     1,411,750 1,198,425  
Forfeitures/cancellations (in shares)     300,420    
Restricted Stock          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Awarded (in shares) 109,416 232,558 109,416    
Vesting period 3 years 3 years      
Fair value of shares on date of issuance $ 413 $ 400   $ 400  
Allocated stock compensation expense     $ 16 $ 13  
Restricted Stock | Minimum          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period     3 months    
Restricted Stock | Maximum          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period     2 years    
Stock Option Plan 2011          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Reserved for future issuance (in shares)     20,000,000    
Available for issuance (in shares)     7,464,711   8,685,457
Stock Incentive Plans | Minimum          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Option plan, term     3 years    
Stock Incentive Plans | Maximum          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Option plan, term     4 years