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Debt (Details) - USD ($)
$ in Thousands
Apr. 30, 2017
Jan. 31, 2017
Short-Term Debt $ 9 $ 153
Long-term Debt, Excluding Current Maturities 678 716
Long-term Debt, Current Maturities 50 50
Line Of Credit, Current 2,363 4,865
ARGENTINA    
Short-Term Debt 9 27
Long-term Debt, Excluding Current Maturities 0 0
Long-term Debt, Current Maturities 0 0
Line Of Credit, Current 0 0
CANADA    
Short-Term Debt 0 0
Long-term Debt, Excluding Current Maturities 678 716
Long-term Debt, Current Maturities 50 50
Line Of Credit, Current 0 0
UNITED KINGDOM    
Short-Term Debt 0 126
Long-term Debt, Excluding Current Maturities 0 0
Long-term Debt, Current Maturities 0 0
Line Of Credit, Current 0 0
UNITED STATES    
Short-Term Debt 0 0
Long-term Debt, Excluding Current Maturities 0 0
Long-term Debt, Current Maturities 0 0
Line Of Credit, Current $ 2,363 $ 4,865