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Net Income Per Share (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Net Income Per Share    
Net income available for stockholders $ 1,860 $ 2,099
Weighted average outstanding shares of common stock 3,394,000 3,337,000
Dilutive effect of stock options (in shares) 159,000 204,000
Common stock and equivalents (in shares) 3,553,000 3,541,000
Net Income per share:    
Basic (in dollars per share) $ 0.55 $ 0.63
Diluted (in dollars per share) $ 0.52 $ 0.59
Anti-dilutive stock options excluded from the calculation of diluted net income per share (in shares) 0 101,433