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Net Income Per Share (Details) - USD ($)
 3 Months Ended 9 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Net Income Per Share [Abstract]        
Net income $ 7,748,000 $ 2,927,000 $ 8,266,000 $ 8,351,000
Basic shares (in shares) 18,319,531 17,921,682 18,180,039 16,331,168
Effect of potentially dilutive securities (in shares) 776,173 900,982 801,382 874,901
Diluted shares (in shares) 19,095,704 18,822,664 18,981,421 17,206,069
Net (loss) income per share [Abstract]        
Basic net income per share (in dollars per share) $ 0.42 $ 0.16 $ 0.45 $ 0.51
Diluted net income per share (in dollars per share) $ 0.41 $ 0.16 $ 0.44 $ 0.49
Options [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive shares excluded from computation of earnings per share (in shares) 0 0 1,100 0
Exercise price of options, lower range (in dollars per share)     $ 34.17  
Warrants [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive shares excluded from computation of earnings per share (in shares) 0 0 0 0