Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Restricted Stock Units and Awards (Details)

v3.20.1
Stockholders' Equity - Restricted Stock Units and Awards (Details) - USD ($)
1 Months Ended 12 Months Ended
Aug. 31, 2017
Mar. 31, 2020
Mar. 31, 2019
Additional disclosure      
Stock-based compensation expense   $ 913,000 $ 907,000
Number of shares issued under purchase plan   522 101
ESPP      
Additional disclosure      
Number of shares of common stock reserved for issuance 7,000 57,000  
Increase in common stock available under the plan 50,000    
Maximum amount that can be contributed by the employee   $ 25,000  
Maximum percentage of regular compensation that can be contributed by the employee   15.00%  
Percentage of the fair market value of common stock on the last day of the purchase right period   95.00%  
Number of shares available for future grant   48,838  
Restricted stock units      
Weighted Average Grant-Date Fair Value      
Granted (in dollars per share)   $ 4.74 $ 0.98
Additional disclosure      
Assumed forfeiture (in shares)   0  
Stock-based compensation expense   $ 913,000 $ 907,000
Aggregate fair value of restricted stock units vested and issued   384,000 $ 748,000
Unrecognized compensation cost   $ 1,200,000  
Weighted average period for recognizing compensation cost   2 years 4 months 24 days  
Restricted stock units | Awards vesting over four years with one-fourth units vesting one year after the issuance date      
Additional disclosure      
Vesting period   4 years  
Awards vesting percentage   25.00%  
Restricted stock units and Performance restricted stock units      
Shares      
Nonvested, balance at the beginning of the period (in shares)   221,778  
Granted (in shares)   262,370  
Vested and issued (in shares)   (100,296)  
Forfeited (in shares)   (53,022)  
Nonvested, balance at the end of the period (in shares)   330,830 221,778
Awards expected to vest (in shares)   330,830  
Weighted Average Grant-Date Fair Value      
Nonvested restricted stock units outstanding at the beginning of the period (in dollars per share)   $ 10.20  
Granted (in dollars per share)   4.74  
Vested and issued (in dollars per share)   9.84  
Forfeited (in dollars per share)   8.34  
Nonvested restricted stock units outstanding at the end of the period (in dollars per share)   6.28 $ 10.20
Awards expected to vest (in dollars per share)   $ 6.28  
Restricted Stock Awards      
Shares      
Granted (in shares)   0 0
Additional disclosure      
Stock-based compensation expense   $ 0 $ 0
Performance Restricted Stock Units      
Weighted Average Grant-Date Fair Value      
Granted (in dollars per share)   $ 8.90  
Additional disclosure      
Performance goal payment as a percentage of target   50.00%  
Performance Restricted Stock Units | Maximum      
Additional disclosure      
Performance goal payment as a percentage of target   150.00%  
Performance Restricted Stock Units | Three-year performance measurement period      
Shares      
Granted (in shares)   30,139  
PRSU Program      
Additional disclosure      
Stock-based compensation expense   $ 100,000  
PRSU Program | Two-year performance measurement period      
Additional disclosure      
Performance measurement period   2 years  
PRSU Program | Three-year performance measurement period      
Additional disclosure      
Performance measurement period   3 years  
Non-employee director | Restricted stock units      
Additional disclosure      
Vesting period   1 year