Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jan. 31, 2012	Jan. 31, 2011
Revenue:
Product leases and royalties	$ 25,953	$ 23,576
Product sales and service	30,100	20,239
Total revenue	56,053	43,815
Costs and expenses:
Cost of leases and royalties	8,951	7,182
Cost of sales and service	11,281	7,465
Gross profit	35,821	29,168
Selling, general and administrative	17,180	16,201
Research and development	7,527	5,916
Total costs and expenses	44,939	36,764
Income from operations	11,114	7,051
Other income (expense):
Interest income	139	126
Interest expense	(477)	(701)
Other, net	175	157
Total other income (expense)	(163)	(418)
Income from operations before tax	10,951	6,633
Income tax provision	3,302	1,829
Net income	$ 7,649	$ 4,804
Basic earnings per share: (in Dollars per share)	$ 0.14	$ 0.09
Diluted earnings per share: (in Dollars per share)	$ 0.14	$ 0.09
Weighted average shares outstanding:
Basic (in Shares)	55,064	54,132
Diluted (in Shares)	55,653	54,895