Income Taxes (Details Textual)			3 Months Ended
	Apr. 30, 2014 USD ($)	Jan. 31, 2014 USD ($)	Apr. 30, 2014 China Tax Authority [Member] USD ($)	Apr. 30, 2014 China Tax Authority [Member] CNY	Apr. 30, 2014 Brazil [Member] USD ($)	Apr. 30, 2014 Brazil [Member] BRL	Apr. 30, 2014 Argentina Subsidiary [Member] China Tax Authority [Member] USD ($)
Income Taxes [Line Items]
Deferred Tax Liability Maximum Additional Tax Liability			$ 16,000	100,000
Investment In Subsidiary For Tax Avoidance							500,000
Deferred Tax Assets, Valuation Allowance	0	0
Income Tax Examination, Penalties and Interest Expense, Total					1,000,000	2,265,728
Income Tax Examination, Tax Expense					127,000	280,416
Undistributed Earnings of Foreign Subsidiaries	18,900,000
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	$ 3,300,000