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Note 3 - Net Income Per Share (Tables)
9 Months Ended
Dec. 31, 2020
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
  

Three Months Ended
December 31,

  

Nine Months Ended
December 31,

 
  

2020

  

2019

  

2020

  

2019

 

Net income (numerator):

                

Net income

 $7,611  $6,840  $23,791  $18,848 

Shares (denominator):

                

Weighted average number of common shares outstanding used in basic computation

  20,094   19,984   20,047   20,060 

Common shares issuable upon vesting of restricted stock

  -   -   43   1 

Common shares issuable upon conversion of preferred shares

  10   10   10   10 

Shares used in diluted computation

  20,104   19,994   20,100   20,071 

Net income per common share:

                

Basic

 $0.38  $0.34  $1.19  $0.94 

Diluted

 $0.38  $0.34  $1.18  $0.94