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Segment Information (Details) (USD $)	3 Months Ended								12 Months Ended
Segment Information (Details) (USD $)	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
schedule of revenues by geographic area [Line Items]
Service agreement revenue									$ 21,700,000us-gaap_RevenueOtherFinancialServices	$ 24,000,000us-gaap_RevenueOtherFinancialServices	$ 18,200,000us-gaap_RevenueOtherFinancialServices
Revenues	54,409,000us-gaap_Revenues	43,176,000us-gaap_Revenues	38,274,000us-gaap_Revenues	44,434,000us-gaap_Revenues	55,157,000us-gaap_Revenues	53,707,000us-gaap_Revenues	42,436,000us-gaap_Revenues	36,358,000us-gaap_Revenues	180,293,000us-gaap_Revenues	187,658,000us-gaap_Revenues	120,603,000us-gaap_Revenues
UNITED STATES
schedule of revenues by geographic area [Line Items]
Revenues									52,765,000	80,199,000	26,929,000
south korea [Domain]
schedule of revenues by geographic area [Line Items]
Revenues									124,669,000	101,928,000	92,163,000
UNITED KINGDOM
schedule of revenues by geographic area [Line Items]
Revenues									119,000	2,036,000	1,061,000
INDONESIA
schedule of revenues by geographic area [Line Items]
Revenues									0	0	147,000
GERMANY
schedule of revenues by geographic area [Line Items]
Revenues									869,000	1,503,000	128,000
CANADA
schedule of revenues by geographic area [Line Items]
Revenues									820,000	1,912,000	175,000
SPAIN
schedule of revenues by geographic area [Line Items]
Revenues									$ 1,051,000	$ 80,000	$ 0