XML 27 R17.htm IDEA: XBRL DOCUMENT v3.7.0.1
Note 2 - Net Income Per Share - Reconciliation of the Numerators and Denominators of the Basic and Diluted Net Income per Share Computations (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Net income (numerator):    
Net income $ 9,276 $ 6,594
Shares (denominator):    
Weighted average number of common shares outstanding used in basic computation (in shares) 20,293 20,181
Common shares issuable upon vesting of restricted stock (in shares) 145 142
Common shares issuable upon conversion of preferred shares (in shares) 10 10
Shares used in diluted computation (in shares) 20,448 20,333
Net income per common share    
Basic (in dollars per share) $ 0.46 $ 0.33
Diluted (in dollars per share) $ 0.45 $ 0.32