Note 10 - Operating Segments (Detail) - Revenues by Geographic Area (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Revenue:
Revenues (in Dollars)	$ 58,784	$ 56,053
Percent Of Revenues	100.00%	100.00%
United States [Member]
Revenue:
Revenues (in Dollars)	29,212	26,184
Percent Of Revenues	49.70%	46.70%
Canada [Member]
Revenue:
Revenues (in Dollars)	1,753	1,518
Percent Of Revenues	3.00%	2.70%
Other Americas [Member]
Revenue:
Revenues (in Dollars)	1,428	1,053
Percent Of Revenues	2.40%	1.90%
Europe [Member]
Revenue:
Revenues (in Dollars)	2,472	1,587
Percent Of Revenues	4.20%	2.80%
Australia [Member]
Revenue:
Revenues (in Dollars)	15,213	18,694
Percent Of Revenues	25.90%	33.40%
Asia [Member]
Revenue:
Revenues (in Dollars)	8,390	6,649
Percent Of Revenues	14.30%	11.90%
Other Geographic Areas [Member]
Revenue:
Revenues (in Dollars)	$ 316	$ 368
Percent Of Revenues	0.50%	0.60%