Note 10 - Operating Segments (Details) - Revenues by Geographic Area (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2013	Jul. 31, 2012
Note 10 - Operating Segments (Details) - Revenues by Geographic Area [Line Items]
Revenues (in Dollars)	$ 73,534	$ 63,386	$ 209,732	$ 185,493
Percent of Revenue	100.00%	100.00%	100.00%	100.00%
United States [Member]
Note 10 - Operating Segments (Details) - Revenues by Geographic Area [Line Items]
Revenues (in Dollars)	27,459	28,372	88,592	83,327
Percent of Revenue	37.30%	44.80%	42.20%	44.90%
Canada [Member]
Note 10 - Operating Segments (Details) - Revenues by Geographic Area [Line Items]
Revenues (in Dollars)	1,773	2,422	5,352	6,166
Percent of Revenue	2.40%	3.80%	2.60%	3.30%
Other Americas [Member]
Note 10 - Operating Segments (Details) - Revenues by Geographic Area [Line Items]
Revenues (in Dollars)	1,453	1,046	4,286	3,224
Percent of Revenue	2.00%	1.60%	2.00%	1.80%
Europe [Member]
Note 10 - Operating Segments (Details) - Revenues by Geographic Area [Line Items]
Revenues (in Dollars)	3,300	2,085	9,598	6,112
Percent of Revenue	4.50%	3.30%	4.60%	3.30%
Australia [Member]
Note 10 - Operating Segments (Details) - Revenues by Geographic Area [Line Items]
Revenues (in Dollars)	23,419	20,785	65,581	64,772
Percent of Revenue	31.80%	32.80%	31.30%	34.90%
Asia [Member]
Note 10 - Operating Segments (Details) - Revenues by Geographic Area [Line Items]
Revenues (in Dollars)	15,635	8,240	35,197	20,905
Percent of Revenue	21.30%	13.00%	16.80%	11.30%
Other Geographic Areas [Member]
Note 10 - Operating Segments (Details) - Revenues by Geographic Area [Line Items]
Revenues (in Dollars)	$ 495	$ 436	$ 1,126	$ 987
Percent of Revenue	0.70%	0.70%	0.50%	0.50%