XML 70 R24.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Note 18 - Quarterly Financial Data (Unaudited)
 12 Months Ended
Dec. 31, 2019
Notes to Financial Statements  
Quarterly Financial Information [Text Block]
18.
Quarterly Financial Data (Unaudited)
 
 
    Quarter ended   Quarter ended   Quarter ended   Quarter ended
Year 2019   December 31   September 30   June 30   March 31
Product revenue   $
29,767
     $
29,615
     $
30,413
     $
24,717
  
Total revenue    
29,772
      
29,697
      
30,418
      
24,723
  
Cost of product revenue    
8,649
      
5,951
      
6,836
      
7,311
  
Gross profit on product revenue    
21,118
      
23,664
      
23,577
      
17,406
  
Net income   $
4,051
     $
9,200
     $
9,435
     $
4,507
  
Per common share information:                                
Basic net income per share   $
0.28
     $
0.65
     $
0.68
     $
0.32
  
Basic common shares outstanding    
14,280
      
14,070
      
13,916
      
14,185
  
Diluted net income per share   $
0.28
     $
0.66
     $
0.67
     $
0.31
  
Diluted common shares outstanding    
14,621
      
14,387
      
14,088
      
14,314
  
 
 
    Quarter ended   Quarter ended   Quarter ended   Quarter ended
Year 2018   December 31   September 30   June 30   March 31
Product revenue   $
26,950
     $
26,781
     $
30,542
     $
21,258
  
Total revenue    
26,956
      
26,787
      
30,548
      
21,264
  
Cost of product revenue    
7,001
      
8,282
      
8,152
      
7,845
  
Gross profit on product revenue    
19,949
      
18,499
      
22,390
      
13,413
  
Net income   $
7,717
     $
7,599
     $
10,092
     $
(6,686
 )
Per common share information:                                
Basic net income per share   $
0.54
     $
0.53
     $
0.69
     $
(0.46
 )
Basic common shares outstanding    
14,168
      
14,237
      
14,652
      
14,679
  
Diluted net income per share   $
0.54
     $
0.53
     $
0.68
     $
(0.46
 )
Diluted common shares outstanding    
14,299
      
14,377
      
14,915
      
14,679