Quarterly report pursuant to Section 13 or 15(d)

Income Per Share - Reconciliation of Numerators and Denominators of Basic and Diluted Income Per Share (Detail)

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Income Per Share - Reconciliation of Numerators and Denominators of Basic and Diluted Income Per Share (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Numerator:        
Net income $ 2,589 $ 2,615 $ 6,397 $ 4,005
Denominator:        
Weighted common shares outstanding 10,051 9,988 10,033 9,975
Share equivalent units ("SEUs") 11 43 27 42
Weighted average shares and SEUs 10,062 10,031 10,060 10,017
Basic income per share $ 0.26 $ 0.26 $ 0.64 $ 0.40
Numerator:        
Net income $ 2,589 $ 2,615 $ 6,397 $ 4,005
Denominator:        
Weighted average shares and SEUs outstanding 10,062 10,031 10,060 10,017
Stock options outstanding 42 23 35 24
Weighted average common and potential common shares outstanding 10,104 10,054 10,095 10,041
Diluted income per share $ 0.26 $ 0.26 $ 0.63 $ 0.40