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, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Numerator:        
Net income $ 4,186 $ 2,589 $ 6,578 $ 6,397
Denominator:        
Weighted common shares outstanding 10,126 10,051 10,116 10,033
Share equivalent units ("SEUs") outstanding   11   27
Weighted average common shares and SEUs outstanding 10,126 10,062 10,116 10,060
Basic income per share $ 0.41 $ 0.26 $ 0.65 $ 0.64
Numerator:        
Net income $ 4,186 $ 2,589 $ 6,578 $ 6,397
Denominator:        
Weighted average shares and SEUs outstanding 10,126 10,062 10,116 10,060
Stock options outstanding 22 42 22 35
Weighted average common and potential common shares outstanding 10,148 10,104 10,138 10,095
Diluted income per share $ 0.41 $ 0.26 $ 0.65 $ 0.63