Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details 4)

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Stock-Based Compensation (Details 4) - USD ($)
 3 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Mar. 31, 2015
Additional disclosure      
Stock-based compensation expense $ 463,000 $ 687,000  
Number of preferred stock purchase right for each share of common stock 1    
Preferred stock, par value (in dollars per share) $ 0.001   $ 0.001
Purchase price (in dollars per share) $ 10.00    
Period following public announcement of beneficial ownership acquired by various persons resulting in rights becoming exercisable 10 days    
Beneficial ownership of common stock (as a percent) 20.00%    
Period following commencement of tender offer or exchange offer that would result in acquisition of beneficial ownership various persons resulting in rights becoming exercisable 10 days    
Series A Junior Participating Preferred Stock      
Additional disclosure      
Preferred stock conversion basis 0.01    
Restricted stock units      
Shares      
Nonvested, balance at the beginning of the period (in shares) 1,868,574    
Granted (in shares) 457,240    
Vested and issued (in shares) (341,410)    
Forfeited (in shares) (183,149)    
Nonvested, balance at the end of the period (in shares) 1,801,255    
Awards expected to vest (in shares) 1,664,259    
Weighted Average Grant-Date Fair Value      
Nonvested restricted stock units outstanding at the beginning of the period (in dollars per share) $ 1.19    
Granted (in dollars per share) 0.70    
Vested and issued (in dollars per share) 1.22    
Forfeited (in dollars per share) 1.14    
Nonvested restricted stock units outstanding at the end of the period (in dollars per share) 1.06    
Awards expected to vest (in dollars per share) $ 1.06    
Additional disclosure      
Stock-based compensation expense $ 294,000 299,000  
Aggregate fair value of restricted stock units vested and issued 198,000 $ 652,000  
Unrecognized compensation cost $ 1,200,000    
Weighted average period for recognizing compensation cost 2 years 3 months 18 days    
Weighted average grant date fair value of options granted during the period (in dollars per share) $ 0.70 $ 1.49  
Restricted stock units | Non-qualified stock options      
Additional disclosure      
Number of shares issued 46,875    
PRSU Program      
Additional disclosure      
Vesting right percentage of awards that will vest after end of applicable performance measurement period 50.00%    
Vesting right percentage of awards that will vest one year after end of performance measurement period 50.00%    
Non-employee director      
Shares      
Granted (in shares) 69,178 18,944  
Additional disclosure      
Stock-based compensation expense $ 30,000 $ 29,000  
Weighted average grant date fair value of options granted during the period (in dollars per share) $ 0.43 $ 1.55  
Chief Executive Officer | PRSU Program      
Shares      
Granted (in shares) 200,000 200,000  
Additional disclosure      
Stock-based compensation expense $ 0.0    
Weighted average grant date fair value of options granted during the period (in dollars per share) $ 0.78 $ 1.56