Quarterly report pursuant to Section 13 or 15(d)

Capital Stock Transactions - Additional Information (Details)

v3.8.0.1
Capital Stock Transactions - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Aug. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Mar. 31, 2017
Class Of Stock [Line Items]                
Series A convertible preferred stock authorized (in shares) 2,000,000     2,000,000   2,000,000   2,000,000
Series A convertible preferred stock, par value (in dollars per share) $ 0.0001     $ 0.0001   $ 0.0001   $ 0.0001
Series A convertible preferred stock issued (in shares) 100,000     100,000   100,000   100,000
Extinguishment of debt $ 1,368 $ 6,000   $ 1,368   $ 7,368    
Shares issued upon extinguishment 1,149,414 5,043,018            
Total unrecognized stock base compensation expense $ 2,691     2,691 $ 5,706 $ 2,691 $ 5,706  
Unvested stock options, weighted average period           2 years 14 days 2 years 3 months 7 days  
Equity Option                
Class Of Stock [Line Items]                
Options exercised (in shares)           182,769    
Restricted Stock                
Class Of Stock [Line Items]                
Granted (shares)           265,138    
Restricted Stock | Minimum                
Class Of Stock [Line Items]                
Vesting period           3 months    
Restricted Stock | Maximum                
Class Of Stock [Line Items]                
Vesting period           2 years    
Non Vested Restricted Stock                
Class Of Stock [Line Items]                
Vesting period     1 year          
Granted (shares)     265,138          
Fair value of shares on date of issuance     $ 289          
Total unrecognized stock base compensation expense $ 169     169   $ 169    
Unvested stock options, weighted average period           7 months    
Time Condition RSAs                
Class Of Stock [Line Items]                
Compensation expense       $ 74 $ 92 $ 224 $ 258  
Convertible Preferred Stock                
Class Of Stock [Line Items]                
Series A convertible preferred stock authorized (in shares)               2,000,000
Series A convertible preferred stock, par value (in dollars per share)               $ 0.0001
Series A convertible preferred stock issued (in shares)               100,000
Aggregate shares upon conversion (shares)           20,000    
Liquidation preference (in dollars per share)               $ 10