FAIR VALUE (Details) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2013	Oct. 31, 2012
Assets:
Total financial assets	$ 26,763	$ 18,038
Liabilities:
Warrant liability	0	17
Total financial liabilities	0	17
Money Market Funds [Member]
Assets:
Total financial assets	19,053	16,048
Bank Time Deposits [Member]
Assets:
Total financial assets	7,710	1,990
Fair Value, Inputs, Level 1 [Member]
Assets:
Total financial assets	26,763	18,038
Liabilities:
Warrant liability	0	0
Total financial liabilities	0	0
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]
Assets:
Total financial assets	19,053	16,048
Fair Value, Inputs, Level 1 [Member] | Bank Time Deposits [Member]
Assets:
Total financial assets	7,710	1,990
Fair Value, Inputs, Level 2 [Member]
Assets:
Total financial assets	0	0
Liabilities:
Warrant liability	0	0
Total financial liabilities	0	0
Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member]
Assets:
Total financial assets	0	0
Fair Value, Inputs, Level 2 [Member] | Bank Time Deposits [Member]
Assets:
Total financial assets	0	0
Fair Value, Inputs, Level 3 [Member]
Assets:
Total financial assets	0	0
Liabilities:
Warrant liability	0	17
Total financial liabilities	0	17
Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member]
Assets:
Total financial assets	0	0
Fair Value, Inputs, Level 3 [Member] | Bank Time Deposits [Member]
Assets:
Total financial assets	$ 0	$ 0