Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
schedule of revenues by geographic area [Line Items]
Service agreement revenue									$ 26,600	$ 16,300	$ 21,700
Revenues	$ 24,473	$ 21,716	$ 28,581	$ 33,482	$ 51,451	$ 41,356	$ 28,600	$ 41,670	108,252	163,077	180,293
UNITED STATES
schedule of revenues by geographic area [Line Items]
Revenues									48,697	52,109	52,765
south korea [Domain]
schedule of revenues by geographic area [Line Items]
Revenues									52,007	109,953	124,669
UNITED KINGDOM
schedule of revenues by geographic area [Line Items]
Revenues									277	142	119
GERMANY
schedule of revenues by geographic area [Line Items]
Revenues									7,147	764	869
CANADA
schedule of revenues by geographic area [Line Items]
Revenues									124	0	820
SPAIN
schedule of revenues by geographic area [Line Items]
Revenues									$ 0	$ 109	$ 1,051