Shareholder's Equity (Details Textual) (USD $)	9 Months Ended
	Nov. 30, 2012 Number	Nov. 30, 2011	Sep. 30, 2011	Jul. 08, 2009
Shareholder's Equity (Textual) [Abstract]
Minimum number of shares repurchased	22,031	57,087
Shareholders Equity (Additional Textual) [Abstract]
Total unrecognized compensation costs related to stock options granted	$ 5,600
Unrecognized stock option compensation cost is expected to be recognized over a period	1 year
Number of members of the board of directors	3
Authorized stock repurchase	1,632,500
Additional authorized stock repurchase				1,000,000
Average price of repurchase shares	$ 4.10
Remaining repurchase of shares authorized	705,106
Portion of company's net earning after tax			10.00%
Minimum [Member]
Shareholder's Equity (Textual) [Abstract]
Minimum number of shares repurchased	0
Director [Member]
Shareholder's Equity (Textual) [Abstract]
Each directors granted stock options	3,000
General and Administrative Expense [Member]
Shareholder's Equity (Textual) [Abstract]
Recognized general and administrative expenses	$ 7,700	2,000