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Property and Equipment (Tables)
 12 Months Ended
Apr. 30, 2019
Property Plant And Equipment [Abstract]  
Components of Property and Equipment

At April 30, 2019 and 2018, property and equipment consisted of (in thousands):

 

 

 

2019

 

 

2018

 

Laboratory equipment

 

$

1,391

 

 

$

1,277

 

Office equipment

 

 

36

 

 

 

33

 

Furniture & fixtures

 

 

175

 

 

 

76

 

Leasehold improvements

 

 

1,707

 

 

 

1,005

 

 

 

 

3,309

 

 

 

2,391

 

Less accumulated depreciation

 

 

(896

)

 

 

(555

)

 

 

$

2,413

 

 

$

1,836