VAT Tax Issue in Brazil (Details Textual)			9 Months Ended
	Oct. 31, 2013 USD ($)	Oct. 31, 2013 BRL	Oct. 31, 2013 After State Amnesty Accepted [Member] USD ($)	Oct. 31, 2013 After State Amnesty Accepted [Member] BRL	Oct. 31, 2013 Claim December 2013 By State of Sao Paulo [Member] USD ($)	Oct. 31, 2013 Maximum [Member]	Oct. 31, 2013 Minimum [Member]
Value Added Tax Examination Claims Incurred In Period					$ 45,000
Value Added Tax Examination Penalties and Interest Expense					200,000
Value Added Tax, Judicial Tax Claim Percentage	20.00%	20.00%
ValueAddedTax, Judicial Tax Claim Amount	6,700,000	15,000,000
Formal Judicial Process Period						10 years	5 years
Value Added Tax Claims, Accepted Amnesty for Smaller Claim, Frequency of Periodic Payment			monthly	monthly
Value Added Tax Claims, Accepted Amnesty for Smaller Claim, Number of Periodic Payment			8 Installments	8 Installments
Value Added Tax Claims, Accepted Amnesty for Smaller Claim, Periodic Payment			19,000	42,000
Value Added Tax Claims, Percentage of Abatement for Penalty and Interest			80.00%	80.00%
Value Added Tax Claims, Penalty and Interest, Accrued			$ 153,000