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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (USD $)
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance at Mar. 31, 2010$ 607,831$ 6,234,079$ 18,058,730$ 24,900,640
Balance (in Shares) at Mar. 31, 20102,431,326   
Net income  844,730844,730
Cash dividend  (802,337)(802,337)
Compensation expense related to stock options   1,600
Compensation expense related to stock options 1,600,000,000 1,600,000,000
Stock repurchase(10,000,000)(381,000,000) (391,000,000)
Stock repurchase (in Shares)(40)   
Balance at Sep. 30, 2010607,8216,235,29818,101,12324,944,242
Balance (in Shares) at Sep. 30, 20102,431,286   
Balance at Mar. 31, 2011607,8216,238,49819,394,29526,240,614
Balance (in Shares) at Mar. 31, 20112,431,286   
Net income  760,872760,872
Cash dividend  (611,571)(611,571)
Exercise of stock options3,750120,600 124,350
Exercise of stock options (in Shares)15,000   
Compensation expense related to stock options 1,469 1,469
Balance at Sep. 30, 2011$ 611,571$ 6,360,567$ 19,543,596$ 26,515,734
Balance (in Shares) at Sep. 30, 20112,446,286