Employee Stock Compensation (Details Textual) (USD $)	6 Months Ended				6 Months Ended			12 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2013 Equity Incentive 2012 Plan [Member]	Jun. 20, 2012 Equity Incentive 2012 Plan [Member]	Jul. 31, 2013 Restricted Stock [Member] Equity Incentive 2012 Plan [Member]	Jul. 31, 2013 Restricted Stock [Member] Equity Incentive 2009 Plan [Member]	Jun. 17, 2009 Restricted Stock [Member] Equity Incentive 2009 Plan [Member]	Jan. 31, 2013 Non Employee Director Stock Option Plan [Member]	Dec. 31, 2012 Non Employee Director Stock Option Plan [Member]	Jul. 31, 2013 Employees Bonus In Stock Program [Member]	Jul. 31, 2013 Director Fee In Stock Program [Member]	Jul. 31, 2013 Selling, General and Administrative Expenses [Member]	Jul. 31, 2012 Selling, General and Administrative Expenses [Member]	Jul. 31, 2013 Selling, General and Administrative Expenses [Member]	Jul. 31, 2012 Selling, General and Administrative Expenses [Member]	Jul. 31, 2013 Selling, General and Administrative Expenses [Member] Equity Incentive 2012 Plan [Member]	Jul. 31, 2012 Selling, General and Administrative Expenses [Member] Equity Incentive 2012 Plan [Member]	Jul. 31, 2013 Selling, General and Administrative Expenses [Member] Equity Incentive 2009 Plan [Member]	Jul. 31, 2012 Selling, General and Administrative Expenses [Member] Equity Incentive 2009 Plan [Member]	Jul. 31, 2013 Selling, General and Administrative Expenses [Member] Director Option Plan [Member]	Jul. 31, 2012 Selling, General and Administrative Expenses [Member] Director Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0							5,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant									1,000
Share-Based Compensation Arrangement By Share-Based Payment Award, Purchase Price Of Common Stock, Percent										133.00%	133.00%
Share Based Compensation Arrangement By Share Based Payment Award Percent Age Of Cash Compensation Taken In Restricted Stock										30.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized				310,000			253,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period						172,008
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grants In Period					281,154	14,141
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grants In Period, Weighted Average Grant Date Fair Value					$ 6.03	$ 7.90
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number			219,654
Employee Service Share-Based Compensation, Nonvested Awards, Total Compensation Cost Not Yet Recognized, Stock Options					$ 1,431,841	$ 6,805
Employee Service Share-Based Compensation, Nonvested Awards, Total Compensation Cost Not Yet Recognized, Stock Options At Base Line Performance					1,035,781	6,805
Share-based Compensation												158,788	176,878	158,788	176,878	147,998	52,119	10,790	100,129	0	24,630
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 57,164	$ 64,560